--- loncom/homework/grades.pm	2002/04/09 04:33:10	1.21
+++ loncom/homework/grades.pm	2007/10/26 00:32:06	1.466
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Grading handler
 #
-# $Id: grades.pm,v 1.21 2002/04/09 04:33:10 albertel Exp $
+# $Id: grades.pm,v 1.466 2007/10/26 00:32:06 albertel Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -25,10 +25,6 @@
 #
 # http://www.lon-capa.org/
 #
-# 2/9,2/13 Guy Albertelli
-# 6/8 Gerd Kortemeyer
-# 7/26 H.K. Ng
-# 8/20 Gerd Kortemeyer
 
 package Apache::grades;
 use strict;
@@ -36,404 +32,8080 @@ use Apache::style;
 use Apache::lonxml;
 use Apache::lonnet;
 use Apache::loncommon;
+use Apache::lonhtmlcommon;
+use Apache::lonnavmaps;
 use Apache::lonhomework;
+use Apache::lonpickcode;
+use Apache::loncoursedata;
+use Apache::lonmsg();
 use Apache::Constants qw(:common);
+use Apache::lonlocal;
+use Apache::lonenc;
+use String::Similarity;
+use LONCAPA;
 
-sub moreinfo {
-  my ($request,$reason) = @_;
-  $request->print("Unable to process request: $reason");
-  if ( $Apache::grades::viewgrades eq 'F' ) {
-    $request->print('<form action="/adm/grades" method="post">'."\n");
-    if ($ENV{'form.url'}) {
-      $request->print('<input type="hidden" name="url" value="'.$ENV{'form.url'}.'" />'."\n");
-    }
-    if ($ENV{'form.symb'}) {
-      $request->print('<input type="hidden" name="symb" value="'.$ENV{'form.symb'}.'" />'."\n");
-    }
-    $request->print('<input type="hidden" name="command" value="'.$ENV{'form.command'}.'" />'."\n");
-    $request->print("Student:".'<input type="text" name="student" value="'.$ENV{'form.student'}.'" />'."<br />\n");
-    $request->print("Domain:".'<input type="text" name="domain" value="'.$ENV{'user.domain'}.'" />'."<br />\n");
-    $request->print('<input type="submit" name="submit" value="ReSubmit" />'."<br />\n");
-    $request->print('</form>');
-  }
-  return '';
+use POSIX qw(floor);
+
+
+my %perm=();
+my %bubble_lines_per_response = ();     # no. bubble lines for each response.
+                                   # index is "symb.part_id"
+
+my %first_bubble_line = ();	# First bubble line no. for each bubble.
+
+# Save and restore the bubble lines array to the form env.
+
+
+sub save_bubble_lines {
+    foreach my $line (keys(%bubble_lines_per_response)) {
+	$env{"form.scantron.bubblelines.$line"}  = $bubble_lines_per_response{$line};
+	$env{"form.scantron.first_bubble_line.$line"} =
+	    $first_bubble_line{$line};
+    }
+}
+
+
+sub restore_bubble_lines {
+    my $line = 0;
+    %bubble_lines_per_response = ();
+    while ($env{"form.scantron.bubblelines.$line"}) {
+	my $value = $env{"form.scantron.bubblelines.$line"};
+	$bubble_lines_per_response{$line} = $value;
+	$first_bubble_line{$line}  =
+	    $env{"form.scantron.first_bubble_line.$line"};
+	$line++;
+    }
+
+}
+
+#  Given the parsed scanline, get the response for 
+#  'answer' number n:
+
+sub get_response_bubbles {
+    my ($parsed_line, $response)  = @_;
+
+
+    my $bubble_line = $first_bubble_line{$response-1} +1;
+    my $bubble_lines= $bubble_lines_per_response{$response-1};
+    
+    my $selected = "";
+
+    for (my $bline = 0; $bline < $bubble_lines; $bline++) {
+	$selected .= $$parsed_line{"scantron.$bubble_line.answer"}.":";
+	$bubble_line++;
+    }
+    return $selected;
+}
+
+
+# ----- These first few routines are general use routines.----
+
+# Return the number of occurences of a pattern in a string.
+
+sub occurence_count {
+    my ($string, $pattern) = @_;
+
+    my @matches = ($string =~ /$pattern/g);
+
+    return scalar(@matches);
+}
+
+
+# Take a string known to have digits and convert all the
+# digits into letters in the range J,A..I.
+
+sub digits_to_letters {
+    my ($input) = @_;
+
+    my @alphabet = ('J', 'A'..'I');
+
+    my @input    = split(//, $input);
+    my $output ='';
+    for (my $i = 0; $i < scalar(@input); $i++) {
+	if ($input[$i] =~ /\d/) {
+	    $output .= $alphabet[$input[$i]];
+	} else {
+	    $output .= $input[$i];
+	}
+    }
+    return $output;
+}
+
+#
+# --- Retrieve the parts from the metadata file.---
+sub getpartlist {
+    my ($symb) = @_;
+
+    my $navmap   = Apache::lonnavmaps::navmap->new();
+    my $res      = $navmap->getBySymb($symb);
+    my $partlist = $res->parts();
+    my $url      = $res->src();
+    my @metakeys = split(/,/,&Apache::lonnet::metadata($url,'keys'));
+
+    my @stores;
+    foreach my $part (@{ $partlist }) {
+	foreach my $key (@metakeys) {
+	    if ($key =~ m/^stores_\Q$part\E_/) { push(@stores,$key); }
+	}
+    }
+    return @stores;
+}
+
+# --- Get the symbolic name of a problem and the url
+sub get_symb {
+    my ($request,$silent) = @_;
+    (my $url=$env{'form.url'}) =~ s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
+    my $symb=($env{'form.symb'} ne '' ? $env{'form.symb'} : (&Apache::lonnet::symbread($url)));
+    if ($symb eq '') { 
+	if (!$silent) {
+	    $request->print("Unable to handle ambiguous references:$url:.");
+	    return ();
+	}
+    }
+    &Apache::lonenc::check_decrypt(\$symb);
+    return ($symb);
+}
+
+#--- Format fullname, username:domain if different for display
+#--- Use anywhere where the student names are listed
+sub nameUserString {
+    my ($type,$fullname,$uname,$udom) = @_;
+    if ($type eq 'header') {
+	return '<b>&nbsp;Fullname&nbsp;</b><span class="LC_internal_info">(Username)</span>';
+    } else {
+	return '&nbsp;'.$fullname.'<span class="LC_internal_info">&nbsp;('.$uname.
+	    ($env{'user.domain'} eq $udom ? '' : ' ('.$udom.')').')</span>';
+    }
+}
+
+#--- Get the partlist and the response type for a given problem. ---
+#--- Indicate if a response type is coded handgraded or not. ---
+sub response_type {
+    my ($symb) = shift;
+
+    my $navmap = Apache::lonnavmaps::navmap->new();
+    my $res = $navmap->getBySymb($symb);
+    my $partlist = $res->parts();
+    my %vPart = 
+	map { $_ => 1 } (&Apache::loncommon::get_env_multiple('form.vPart'));
+    my (%response_types,%handgrade);
+    foreach my $part (@{ $partlist }) {
+	next if (%vPart && !exists($vPart{$part}));
+
+	my @types = $res->responseType($part);
+	my @ids = $res->responseIds($part);
+	for (my $i=0; $i < scalar(@ids); $i++) {
+	    $response_types{$part}{$ids[$i]} = $types[$i];
+	    $handgrade{$part.'_'.$ids[$i]} = 
+		&Apache::lonnet::EXT('resource.'.$part.'_'.$ids[$i].
+				     '.handgrade',$symb);
+	}
+    }
+    return ($partlist,\%handgrade,\%response_types);
+}
+
+sub flatten_responseType {
+    my ($responseType) = @_;
+    my @part_response_id =
+	map { 
+	    my $part = $_;
+	    map {
+		[$part,$_]
+		} sort(keys(%{ $responseType->{$part} }));
+	} sort(keys(%$responseType));
+    return @part_response_id;
+}
+
+sub get_display_part {
+    my ($partID,$symb)=@_;
+    my $display=&Apache::lonnet::EXT('resource.'.$partID.'.display',$symb);
+    if (defined($display) and $display ne '') {
+	$display.= " (<span class=\"LC_internal_info\">id $partID</span>)";
+    } else {
+	$display=$partID;
+    }
+    return $display;
+}
+
+#--- Show resource title
+#--- and parts and response type
+sub showResourceInfo {
+    my ($symb,$probTitle,$checkboxes) = @_;
+    my $col=3;
+    if ($checkboxes) { $col=4; }
+    my $result = '<h3>'.&mt('Current Resource').': '.$probTitle.'</h3>'."\n";
+    $result .='<table border="0">';
+    my ($partlist,$handgrade,$responseType) = &response_type($symb);
+    my %resptype = ();
+    my $hdgrade='no';
+    my %partsseen;
+    foreach my $partID (sort keys(%$responseType)) {
+	foreach my $resID (sort keys(%{ $responseType->{$partID} })) {
+	    my $handgrade=$$handgrade{$partID.'_'.$resID};
+	    my $responsetype = $responseType->{$partID}->{$resID};
+	    $hdgrade = $handgrade if ($handgrade eq 'yes');
+	    $result.='<tr>';
+	    if ($checkboxes) {
+		if (exists($partsseen{$partID})) {
+		    $result.="<td>&nbsp;</td>";
+		} else {
+		    $result.="<td><input type='checkbox' name='vPart' value='$partID' checked='checked' /></td>";
+		}
+		$partsseen{$partID}=1;
+	    }
+	    my $display_part=&get_display_part($partID,$symb);
+	    $result.='<td><b>Part: </b>'.$display_part.' <span class="LC_internal_info">'.
+		$resID.'</span></td>'.
+		'<td><b>Type: </b>'.$responsetype.'</td></tr>';
+#	    '<td><b>Handgrade: </b>'.$handgrade.'</td></tr>';
+	}
+    }
+    $result.='</table>'."\n";
+    return $result,$responseType,$hdgrade,$partlist,$handgrade;
+}
+
+sub reset_caches {
+    &reset_analyze_cache();
+    &reset_perm();
+}
+
+{
+    my %analyze_cache;
+
+    sub reset_analyze_cache {
+	undef(%analyze_cache);
+    }
+
+    sub get_analyze {
+	my ($symb,$uname,$udom)=@_;
+	my $key = "$symb\0$uname\0$udom";
+	return $analyze_cache{$key} if (exists($analyze_cache{$key}));
+
+	my (undef,undef,$url)=&Apache::lonnet::decode_symb($symb);
+	$url=&Apache::lonnet::clutter($url);
+	my $subresult=&Apache::lonnet::ssi($url,
+					   ('grade_target' => 'analyze'),
+					   ('grade_domain' => $udom),
+					   ('grade_symb' => $symb),
+					   ('grade_courseid' => 
+					    $env{'request.course.id'}),
+					   ('grade_username' => $uname));
+	(undef,$subresult)=split(/_HASH_REF__/,$subresult,2);
+	my %analyze=&Apache::lonnet::str2hash($subresult);
+	return $analyze_cache{$key} = \%analyze;
+    }
+
+    sub get_order {
+	my ($partid,$respid,$symb,$uname,$udom)=@_;
+	my $analyze = &get_analyze($symb,$uname,$udom);
+	return $analyze->{"$partid.$respid.shown"};
+    }
+
+    sub get_radiobutton_correct_foil {
+	my ($partid,$respid,$symb,$uname,$udom)=@_;
+	my $analyze = &get_analyze($symb,$uname,$udom);
+	foreach my $foil (@{&get_order($partid,$respid,$symb,$uname,$udom)}) {
+	    if ($analyze->{"$partid.$respid.foil.value.$foil"} eq 'true') {
+		return $foil;
+	    }
+	}
+    }
+}
+
+#--- Clean response type for display
+#--- Currently filters option/rank/radiobutton/match/essay/Task
+#        response types only.
+sub cleanRecord {
+    my ($answer,$response,$symb,$partid,$respid,$record,$order,$version,
+	$uname,$udom) = @_;
+    my $grayFont = '<span class="LC_internal_info">';
+    if ($response =~ /^(option|rank)$/) {
+	my %answer=&Apache::lonnet::str2hash($answer);
+	my %grading=&Apache::lonnet::str2hash($record->{$version."resource.$partid.$respid.submissiongrading"});
+	my ($toprow,$bottomrow);
+	foreach my $foil (@$order) {
+	    if ($grading{$foil} == 1) {
+		$toprow.='<td><b>'.$answer{$foil}.'&nbsp;</b></td>';
+	    } else {
+		$toprow.='<td><i>'.$answer{$foil}.'&nbsp;</i></td>';
+	    }
+	    $bottomrow.='<td>'.$grayFont.$foil.'</span>&nbsp;</td>';
+	}
+	return '<blockquote><table border="1">'.
+	    '<tr valign="top"><td>'.&mt('Answer').'</td>'.$toprow.'</tr>'.
+	    '<tr valign="top"><td>'.$grayFont.&mt('Option ID').'</span></td>'.
+	    $grayFont.$bottomrow.'</tr>'.'</table></blockquote>';
+    } elsif ($response eq 'match') {
+	my %answer=&Apache::lonnet::str2hash($answer);
+	my %grading=&Apache::lonnet::str2hash($record->{$version."resource.$partid.$respid.submissiongrading"});
+	my @items=&Apache::lonnet::str2array($record->{$version."resource.$partid.$respid.submissionitems"});
+	my ($toprow,$middlerow,$bottomrow);
+	foreach my $foil (@$order) {
+	    my $item=shift(@items);
+	    if ($grading{$foil} == 1) {
+		$toprow.='<td><b>'.$item.'&nbsp;</b></td>';
+		$middlerow.='<td><b>'.$grayFont.$answer{$foil}.'&nbsp;</span></b></td>';
+	    } else {
+		$toprow.='<td><i>'.$item.'&nbsp;</i></td>';
+		$middlerow.='<td><i>'.$grayFont.$answer{$foil}.'&nbsp;</span></i></td>';
+	    }
+	    $bottomrow.='<td>'.$grayFont.$foil.'</span>&nbsp;</td>';
+	}
+	return '<blockquote><table border="1">'.
+	    '<tr valign="top"><td>'.&mt('Answer').'</td>'.$toprow.'</tr>'.
+	    '<tr valign="top"><td>'.$grayFont.&mt('Item ID').'</span></td>'.
+	    $middlerow.'</tr>'.
+	    '<tr valign="top"><td>'.$grayFont.&mt('Option ID').'</span></td>'.
+	    $bottomrow.'</tr>'.'</table></blockquote>';
+    } elsif ($response eq 'radiobutton') {
+	my %answer=&Apache::lonnet::str2hash($answer);
+	my ($toprow,$bottomrow);
+	my $correct = 
+	    &get_radiobutton_correct_foil($partid,$respid,$symb,$uname,$udom);
+	foreach my $foil (@$order) {
+	    if (exists($answer{$foil})) {
+		if ($foil eq $correct) {
+		    $toprow.='<td><b>'.&mt('true').'</b></td>';
+		} else {
+		    $toprow.='<td><i>'.&mt('true').'</i></td>';
+		}
+	    } else {
+		$toprow.='<td>'.&mt('false').'</td>';
+	    }
+	    $bottomrow.='<td>'.$grayFont.$foil.'</span>&nbsp;</td>';
+	}
+	return '<blockquote><table border="1">'.
+	    '<tr valign="top"><td>'.&mt('Answer').'</td>'.$toprow.'</tr>'.
+	    '<tr valign="top"><td>'.$grayFont.&mt('Option ID').'</span></td>'.
+	    $grayFont.$bottomrow.'</tr>'.'</table></blockquote>';
+    } elsif ($response eq 'essay') {
+	if (! exists ($env{'form.'.$symb})) {
+	    my (%keyhash) = &Apache::lonnet::dump('nohist_handgrade',
+						  $env{'course.'.$env{'request.course.id'}.'.domain'},
+						  $env{'course.'.$env{'request.course.id'}.'.num'});
+
+	    my $loginuser = $env{'user.name'}.':'.$env{'user.domain'};
+	    $env{'form.keywords'} = $keyhash{$symb.'_keywords'} ne '' ? $keyhash{$symb.'_keywords'} : '';
+	    $env{'form.kwclr'}    = $keyhash{$loginuser.'_kwclr'} ne '' ? $keyhash{$loginuser.'_kwclr'} : 'red';
+	    $env{'form.kwsize'}   = $keyhash{$loginuser.'_kwsize'} ne '' ? $keyhash{$loginuser.'_kwsize'} : '0';
+	    $env{'form.kwstyle'}  = $keyhash{$loginuser.'_kwstyle'} ne '' ? $keyhash{$loginuser.'_kwstyle'} : '';
+	    $env{'form.'.$symb} = 1; # so that we don't have to read it from disk for multiple sub of the same prob.
+	}
+	$answer =~ s-\n-<br />-g;
+	return '<br /><br /><blockquote><tt>'.&keywords_highlight($answer).'</tt></blockquote>';
+    } elsif ( $response eq 'organic') {
+	my $result='Smile representation: "<tt>'.$answer.'</tt>"';
+	my $jme=$record->{$version."resource.$partid.$respid.molecule"};
+	$result.=&Apache::chemresponse::jme_img($jme,$answer,400);
+	return $result;
+    } elsif ( $response eq 'Task') {
+	if ( $answer eq 'SUBMITTED') {
+	    my $files = $record->{$version."resource.$respid.$partid.bridgetask.portfiles"};
+	    my $result = &Apache::bridgetask::file_list($files,$uname,$udom);
+	    return $result;
+	} elsif ( grep(/^\Q$version\E.*?\.instance$/, keys(%{$record})) ) {
+	    my @matches = grep(/^\Q$version\E.*?\.instance$/,
+			       keys(%{$record}));
+	    return join('<br />',($version,@matches));
+			       
+			       
+	} else {
+	    my $result =
+		'<p>'
+		.&mt('Overall result: [_1]',
+		     $record->{$version."resource.$respid.$partid.status"})
+		.'</p>';
+	    
+	    $result .= '<ul>';
+	    my @grade = grep(/^\Q${version}resource.$respid.$partid.\E[^.]*[.]status$/,
+			     keys(%{$record}));
+	    foreach my $grade (sort(@grade)) {
+		my ($dim) = ($grade =~/[.]([^.]+)[.]status$/);
+		$result.= '<li>'.&mt("Dimension: [_1], status [_2] ",
+				     $dim, $record->{$grade}).
+			  '</li>';
+	    }
+	    $result.='</ul>';
+	    return $result;
+	}
+    } elsif ( $response =~ m/(?:numerical|formula)/) {
+	$answer = 
+	    &Apache::loncommon::format_previous_attempt_value('submission',
+							      $answer);
+    }
+    return $answer;
+}
+
+#-- A couple of common js functions
+sub commonJSfunctions {
+    my $request = shift;
+    $request->print(<<COMMONJSFUNCTIONS);
+<script type="text/javascript" language="javascript">
+    function radioSelection(radioButton) {
+	var selection=null;
+	if (radioButton.length > 1) {
+	    for (var i=0; i<radioButton.length; i++) {
+		if (radioButton[i].checked) {
+		    return radioButton[i].value;
+		}
+	    }
+	} else {
+	    if (radioButton.checked) return radioButton.value;
+	}
+	return selection;
+    }
+
+    function pullDownSelection(selectOne) {
+	var selection="";
+	if (selectOne.length > 1) {
+	    for (var i=0; i<selectOne.length; i++) {
+		if (selectOne[i].selected) {
+		    return selectOne[i].value;
+		}
+	    }
+	} else {
+            // only one value it must be the selected one
+	    return selectOne.value;
+	}
+    }
+</script>
+COMMONJSFUNCTIONS
+}
+
+#--- Dumps the class list with usernames,list of sections,
+#--- section, ids and fullnames for each user.
+sub getclasslist {
+    my ($getsec,$filterlist,$getgroup) = @_;
+    my @getsec;
+    my @getgroup;
+    my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
+    if (!ref($getsec)) {
+	if ($getsec ne '' && $getsec ne 'all') {
+	    @getsec=($getsec);
+	}
+    } else {
+	@getsec=@{$getsec};
+    }
+    if (grep(/^all$/,@getsec)) { undef(@getsec); }
+    if (!ref($getgroup)) {
+	if ($getgroup ne '' && $getgroup ne 'all') {
+	    @getgroup=($getgroup);
+	}
+    } else {
+	@getgroup=@{$getgroup};
+    }
+    if (grep(/^all$/,@getgroup)) { undef(@getgroup); }
+
+    my ($classlist,$keylist)=&Apache::loncoursedata::get_classlist();
+    # Bail out if we were unable to get the classlist
+    return if (! defined($classlist));
+    &Apache::loncoursedata::get_group_memberships($classlist,$keylist);
+    #
+    my %sections;
+    my %fullnames;
+    foreach my $student (keys(%$classlist)) {
+        my $end      = 
+            $classlist->{$student}->[&Apache::loncoursedata::CL_END()];
+        my $start    = 
+            $classlist->{$student}->[&Apache::loncoursedata::CL_START()];
+        my $id       = 
+            $classlist->{$student}->[&Apache::loncoursedata::CL_ID()];
+        my $section  = 
+            $classlist->{$student}->[&Apache::loncoursedata::CL_SECTION()];
+        my $fullname = 
+            $classlist->{$student}->[&Apache::loncoursedata::CL_FULLNAME()];
+        my $status   = 
+            $classlist->{$student}->[&Apache::loncoursedata::CL_STATUS()];
+        my $group   = 
+            $classlist->{$student}->[&Apache::loncoursedata::CL_GROUP()];
+	# filter students according to status selected
+	if ($filterlist && (!($stu_status =~ /Any/))) {
+	    if (!($stu_status =~ $status)) {
+		delete($classlist->{$student});
+		next;
+	    }
+	}
+	# filter students according to groups selected
+	my @stu_groups = split(/,/,$group);
+	if (@getgroup) {
+	    my $exclude = 1;
+	    foreach my $grp (@getgroup) {
+	        foreach my $stu_group (@stu_groups) {
+	            if ($stu_group eq $grp) {
+	                $exclude = 0;
+    	            } 
+	        }
+    	        if (($grp eq 'none') && !$group) {
+        	        $exclude = 0;
+        	}
+	    }
+	    if ($exclude) {
+	        delete($classlist->{$student});
+	    }
+	}
+	$section = ($section ne '' ? $section : 'none');
+	if (&canview($section)) {
+	    if (!@getsec || grep(/^\Q$section\E$/,@getsec)) {
+		$sections{$section}++;
+		if ($classlist->{$student}) {
+		    $fullnames{$student}=$fullname;
+		}
+	    } else {
+		delete($classlist->{$student});
+	    }
+	} else {
+	    delete($classlist->{$student});
+	}
+    }
+    my %seen = ();
+    my @sections = sort(keys(%sections));
+    return ($classlist,\@sections,\%fullnames);
+}
+
+sub canmodify {
+    my ($sec)=@_;
+    if ($perm{'mgr'}) {
+	if (!defined($perm{'mgr_section'})) {
+	    # can modify whole class
+	    return 1;
+	} else {
+	    if ($sec eq $perm{'mgr_section'}) {
+		#can modify the requested section
+		return 1;
+	    } else {
+		# can't modify the request section
+		return 0;
+	    }
+	}
+    }
+    #can't modify
+    return 0;
+}
+
+sub canview {
+    my ($sec)=@_;
+    if ($perm{'vgr'}) {
+	if (!defined($perm{'vgr_section'})) {
+	    # can modify whole class
+	    return 1;
+	} else {
+	    if ($sec eq $perm{'vgr_section'}) {
+		#can modify the requested section
+		return 1;
+	    } else {
+		# can't modify the request section
+		return 0;
+	    }
+	}
+    }
+    #can't modify
+    return 0;
+}
+
+#--- Retrieve the grade status of a student for all the parts
+sub student_gradeStatus {
+    my ($symb,$udom,$uname,$partlist) = @_;
+    my %record     = &Apache::lonnet::restore($symb,$env{'request.course.id'},$udom,$uname);
+    my %partstatus = ();
+    foreach (@$partlist) {
+	my ($status,undef)   = split(/_/,$record{"resource.$_.solved"},2);
+	$status              = 'nothing' if ($status eq '');
+	$partstatus{$_}      = $status;
+	my $subkey           = "resource.$_.submitted_by";
+	$partstatus{$subkey} = $record{$subkey} if ($record{$subkey} ne '');
+    }
+    return %partstatus;
+}
+
+# hidden form and javascript that calls the form
+# Use by verifyscript and viewgrades
+# Shows a student's view of problem and submission
+sub jscriptNform {
+    my ($symb) = @_;
+    my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
+    my $jscript='<script type="text/javascript" language="javascript">'."\n".
+	'    function viewOneStudent(user,domain) {'."\n".
+	'	document.onestudent.student.value = user;'."\n".
+	'	document.onestudent.userdom.value = domain;'."\n".
+	'	document.onestudent.submit();'."\n".
+	'    }'."\n".
+	'</script>'."\n";
+    $jscript.= '<form action="/adm/grades" method="post" name="onestudent">'."\n".
+	'<input type="hidden" name="symb"    value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
+	'<input type="hidden" name="saveState" value="'.$env{'form.saveState'}.'" />'."\n".
+	'<input type="hidden" name="probTitle" value="'.$env{'form.probTitle'}.'" />'."\n".
+	'<input type="hidden" name="Status"  value="'.$stu_status.'" />'."\n".
+	'<input type="hidden" name="command" value="submission" />'."\n".
+	'<input type="hidden" name="student" value="" />'."\n".
+	'<input type="hidden" name="userdom" value="" />'."\n".
+	'</form>'."\n";
+    return $jscript;
+}
+
+
+
+# Given the score (as a number [0-1] and the weight) what is the final
+# point value? This function will round to the nearest tenth, third,
+# or quarter if one of those is within the tolerance of .00001.
+sub compute_points {
+    my ($score, $weight) = @_;
+    
+    my $tolerance = .00001;
+    my $points = $score * $weight;
+
+    # Check for nearness to 1/x.
+    my $check_for_nearness = sub {
+        my ($factor) = @_;
+        my $num = ($points * $factor) + $tolerance;
+        my $floored_num = floor($num);
+        if ($num - $floored_num < 2 * $tolerance * $factor) {
+            return $floored_num / $factor;
+        }
+        return $points;
+    };
+
+    $points = $check_for_nearness->(10);
+    $points = $check_for_nearness->(3);
+    $points = $check_for_nearness->(4);
+    
+    return $points;
+}
+
+#------------------ End of general use routines --------------------
+
+#
+# Find most similar essay
+#
+
+sub most_similar {
+    my ($uname,$udom,$uessay,$old_essays)=@_;
+
+# ignore spaces and punctuation
+
+    $uessay=~s/\W+/ /gs;
+
+# ignore empty submissions (occuring when only files are sent)
+
+    unless ($uessay=~/\w+/) { return ''; }
+
+# these will be returned. Do not care if not at least 50 percent similar
+    my $limit=0.6;
+    my $sname='';
+    my $sdom='';
+    my $scrsid='';
+    my $sessay='';
+# go through all essays ...
+    foreach my $tkey (keys(%$old_essays)) {
+	my ($tname,$tdom,$tcrsid)=map {&unescape($_)} (split(/\./,$tkey));
+# ... except the same student
+        next if (($tname eq $uname) && ($tdom eq $udom));
+	my $tessay=$old_essays->{$tkey};
+	$tessay=~s/\W+/ /gs;
+# String similarity gives up if not even limit
+	my $tsimilar=&String::Similarity::similarity($uessay,$tessay,$limit);
+# Found one
+	if ($tsimilar>$limit) {
+	    $limit=$tsimilar;
+	    $sname=$tname;
+	    $sdom=$tdom;
+	    $scrsid=$tcrsid;
+	    $sessay=$old_essays->{$tkey};
+	}
+    }
+    if ($limit>0.6) {
+       return ($sname,$sdom,$scrsid,$sessay,$limit);
+    } else {
+       return ('','','','',0);
+    }
 }
 
+#-------------------------------------------------------------------
+
+#------------------------------------ Receipt Verification Routines
+#
+#--- Check whether a receipt number is valid.---
+sub verifyreceipt {
+    my $request  = shift;
+
+    my $courseid = $env{'request.course.id'};
+    my $receipt  = &Apache::lonnet::recprefix($courseid).'-'.
+	$env{'form.receipt'};
+    $receipt     =~ s/[^\-\d]//g;
+    my ($symb)   = &get_symb($request);
+
+    my $title.='<h3><span class="LC_info">Verifying Submission Receipt '.
+	$receipt.'</h3></span>'."\n".
+	'<h4><b>Resource: </b>'.$env{'form.probTitle'}.'</h4><br /><br />'."\n";
+
+    my ($string,$contents,$matches) = ('','',0);
+    my (undef,undef,$fullname) = &getclasslist('all','0');
+    
+    my $receiptparts=0;
+    if ($env{"course.$courseid.receiptalg"} eq 'receipt2' ||
+	$env{"course.$courseid.receiptalg"} eq 'receipt3') { $receiptparts=1; }
+    my $parts=['0'];
+    if ($receiptparts) { ($parts)=&response_type($symb); }
+    foreach (sort 
+	     {
+		 if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
+		     return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
+		 }
+		 return $a cmp $b;
+	     } (keys(%$fullname))) {
+	my ($uname,$udom)=split(/\:/);
+	foreach my $part (@$parts) {
+	    if ($receipt eq &Apache::lonnet::ireceipt($uname,$udom,$courseid,$symb,$part)) {
+		$contents.='<tr bgcolor="#ffffe6"><td>&nbsp;'."\n".
+		    '<a href="javascript:viewOneStudent(\''.$uname.'\',\''.$udom.
+		    '\');" target="_self">'.$$fullname{$_}.'</a>&nbsp;</td>'."\n".
+		    '<td>&nbsp;'.$uname.'&nbsp;</td>'.
+		    '<td>&nbsp;'.$udom.'&nbsp;</td>';
+		if ($receiptparts) {
+		    $contents.='<td>&nbsp;'.$part.'&nbsp;</td>';
+		}
+		$contents.='</tr>'."\n";
+		
+		$matches++;
+	    }
+	}
+    }
+    if ($matches == 0) {
+	$string = $title.'No match found for the above receipt.';
+    } else {
+	$string = &jscriptNform($symb).$title.
+	    'The above receipt matches the following student'.
+	    ($matches <= 1 ? '.' : 's.')."\n".
+	    '<table border="0"><tr><td bgcolor="#777777">'."\n".
+	    '<table border="0"><tr bgcolor="#e6ffff">'."\n".
+	    '<td><b>&nbsp;Fullname&nbsp;</b></td>'."\n".
+	    '<td><b>&nbsp;Username&nbsp;</b></td>'."\n".
+	    '<td><b>&nbsp;Domain&nbsp;</b></td>';
+	if ($receiptparts) {
+	    $string.='<td>&nbsp;Problem Part&nbsp;</td>';
+	}
+	$string.='</tr>'."\n".$contents.
+	    '</table></td></tr></table>'."\n";
+    }
+    return $string.&show_grading_menu_form($symb);
+}
 
+#--- This is called by a number of programs.
+#--- Called from the Grading Menu - View/Grade an individual student
+#--- Also called directly when one clicks on the subm button 
+#    on the problem page.
 sub listStudents {
-  my ($request) = shift;
-  my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});
-  my $chome=$ENV{"course.$ENV{'request.course.id'}.home"};
-  $request->print ('<h1>Show Student Submissions on Assessment</h1>'.
- '<table border="1"><tr><th>Username</th><th>Domain</th><th>Name</th><th>&nbsp;</th></tr>'
- );
-  my (%classlist) = &getclasslist($cdom,$cnum,$chome,'0');
-  foreach my $student ( sort(@{ $classlist{'allids'} }) ) {
-      my ($sname,$sdom) = split(/:/,$student);
-
-      my $reply=&Apache::lonnet::reply('get:'.$sdom.':'.$sname.
-		     ':environment:lastname&generation&firstname&middlename',
-		      &Apache::lonnet::homeserver($sname,$sdom));
-      #print "reply=$reply<br>";
-      my (@nameparts) = split /&/,$reply;
-#      my $sfullname = $Apache::lonnet::unescape($nameparts[0]);
-
-      if ( $Apache::grades::viewgrades eq 'F' ) {
-	  $request->print("\n".'<tr>'."<td>$sname</td><td>$sdom</td><td>@nameparts</td><td>".
-			  '<form action="/adm/grades" method="post">');
-	  if ($ENV{'form.url'}) {
-	    $request->print(
-    '<input type="hidden" name="url" value="'.$ENV{'form.url'}.'" />');
-	  }
-	  if ($ENV{'form.symb'}) {
-	    $request->print(
-    '<input type="hidden" name="symb" value="'.$ENV{'form.symb'}.'" />');
-	  }
-	  $request->print(
-    '<input type="hidden" name="command" value="'.$ENV{'form.command'}.'" />');
-	  $request->print(
-             '<input type="hidden" name="student" value="'.$sname.'" />');
-	  $request->print(
-             '<input type="hidden" name="domain" value="'.$sdom.'" />');
-	  $request->print(
-                         '<input type="submit" name="submit" value="View" />');
-	  $request->print('</form></td></tr>');
+    my ($request) = shift;
+
+    my ($symb) = &get_symb($request);
+    my $cdom      = $env{"course.$env{'request.course.id'}.domain"};
+    my $cnum      = $env{"course.$env{'request.course.id'}.num"};
+    my $getsec    = $env{'form.section'} eq '' ? 'all' : $env{'form.section'};
+    my $getgroup  = $env{'form.group'} eq '' ? 'all' : $env{'form.group'};
+    my $submitonly= $env{'form.submitonly'} eq '' ? 'all' : $env{'form.submitonly'};
+    my $viewgrade = $env{'form.showgrading'} eq 'yes' ? 'View/Grade/Regrade' : 'View';
+    $env{'form.probTitle'} = $env{'form.probTitle'} eq '' ? 
+	&Apache::lonnet::gettitle($symb) : $env{'form.probTitle'};
+
+    my $result='<h3><span class="LC_info">&nbsp;'.$viewgrade.
+	' Submissions for a Student or a Group of Students</span></h3>';
+
+    my ($table,undef,$hdgrade,$partlist,$handgrade) = &showResourceInfo($symb,$env{'form.probTitle'},($env{'form.showgrading'} eq 'yes'));
+
+    $request->print(<<LISTJAVASCRIPT);
+<script type="text/javascript" language="javascript">
+    function checkSelect(checkBox) {
+	var ctr=0;
+	var sense="";
+	if (checkBox.length > 1) {
+	    for (var i=0; i<checkBox.length; i++) {
+		if (checkBox[i].checked) {
+		    ctr++;
+		}
+	    }
+	    sense = "a student or group of students";
+	} else {
+	    if (checkBox.checked) {
+		ctr = 1;
+	    }
+	    sense = "the student";
+	}
+	if (ctr == 0) {
+	    alert("Please select "+sense+" before clicking on the Next button.");
+	    return false;
+	}
+	document.gradesub.submit();
+    }
+
+    function reLoadList(formname) {
+	if (formname.saveStatusOld.value == pullDownSelection(formname.Status)) {return;}
+	formname.command.value = 'submission';
+	formname.submit();
+    }
+</script>
+LISTJAVASCRIPT
+
+    &commonJSfunctions($request);
+    $request->print($result);
+
+    my $checkhdgrade = ($env{'form.handgrade'} eq 'yes' && scalar(@$partlist) > 1 ) ? 'checked="checked"' : '';
+    my $checklastsub = $checkhdgrade eq '' ? 'checked="checked"' : '';
+    my $gradeTable='<form action="/adm/grades" method="post" name="gradesub">'.
+	"\n".$table.
+	'&nbsp;<b>View Problem Text: </b><label><input type="radio" name="vProb" value="no" checked="checked" /> no </label>'."\n".
+	'<label><input type="radio" name="vProb" value="yes" /> one student </label>'."\n".
+	'<label><input type="radio" name="vProb" value="all" /> all students </label><br />'."\n".
+	'&nbsp;<b>View Answer: </b><label><input type="radio" name="vAns" value="no"  /> no </label>'."\n".
+	'<label><input type="radio" name="vAns" value="yes" /> one student </label>'."\n".
+	'<label><input type="radio" name="vAns" value="all" checked="checked" /> all students </label><br />'."\n".
+	'&nbsp;<b>Submissions: </b>'."\n";
+    if ($env{'form.handgrade'} eq 'yes' && scalar(@$partlist) > 1) {
+	$gradeTable.='<label><input type="radio" name="lastSub" value="hdgrade" '.$checkhdgrade.' /> essay part only </label>'."\n";
+    }
+    my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
+    my $saveStatus = $stu_status eq '' ? 'Active' : $stu_status;
+    $env{'form.Status'} = $saveStatus;
+    $gradeTable.='<label><input type="radio" name="lastSub" value="lastonly" '.$checklastsub.' /> last submission only </label>'."\n".
+	'<label><input type="radio" name="lastSub" value="last" /> last submission & parts info </label>'."\n".
+	'<label><input type="radio" name="lastSub" value="datesub" /> by dates and submissions </label>'."\n".
+	'<label><input type="radio" name="lastSub" value="all" /> all details</label><br />'."\n".
+        '&nbsp;<b>Grading Increments:</b> <select name="increment">'.
+        '<option value="1">Whole Points</option>'.
+        '<option value=".5">Half Points</option>'.
+        '<option value=".25">Quarter Points</option>'.
+        '<option value=".1">Tenths of a Point</option>'.
+        '</select>'.
+        &build_section_inputs().
+	'<input type="hidden" name="submitonly"  value="'.$submitonly.'" />'."\n".
+	'<input type="hidden" name="handgrade"   value="'.$env{'form.handgrade'}.'" /><br />'."\n".
+	'<input type="hidden" name="showgrading" value="'.$env{'form.showgrading'}.'" /><br />'."\n".
+	'<input type="hidden" name="saveState"   value="'.$env{'form.saveState'}.'" />'."\n".
+	'<input type="hidden" name="probTitle"   value="'.$env{'form.probTitle'}.'" />'."\n".
+	'<input type="hidden" name="symb" value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
+	'<input type="hidden" name="saveStatusOld" value="'.$saveStatus.'" />'."\n";
+
+    if (exists($env{'form.gradingMenu'}) && exists($env{'form.Status'})) {
+	$gradeTable.='<input type="hidden" name="Status"   value="'.$stu_status.'" />'."\n";
+    } else {
+	$gradeTable.='<b>Student Status:</b> '.
+	    &Apache::lonhtmlcommon::StatusOptions($saveStatus,undef,1,'javascript:reLoadList(this.form);').'<br />';
+    }
+
+    $gradeTable.='To '.lc($viewgrade).' a submission or a group of submissions, click on the check box(es) '.
+	'next to the student\'s name(s). Then click on the Next button.<br />'."\n".
+	'<input type="hidden" name="command" value="processGroup" />'."\n";
+
+# checkall buttons
+    $gradeTable.=&check_script('gradesub', 'stuinfo');
+    $gradeTable.='<input type="button" '."\n".
+	'onClick="javascript:checkSelect(this.form.stuinfo);" '."\n".
+	'value="Next->" /> <br />'."\n";
+    $gradeTable.=&check_buttons();
+    $gradeTable.='<label><input type="checkbox" name="checkPlag" checked="checked" />Check For Plagiarism</label>';
+    my ($classlist, undef, $fullname) = &getclasslist($getsec,'1',$getgroup);
+    $gradeTable.='<table border="0"><tr><td bgcolor="#777777">'.
+	'<table border="0"><tr bgcolor="#e6ffff">';
+    my $loop = 0;
+    while ($loop < 2) {
+	$gradeTable.='<td><b>&nbsp;No.</b>&nbsp;</td><td><b>&nbsp;Select&nbsp;</b></td>'.
+	    '<td>'.&nameUserString('header').'&nbsp;Section/Group</td>';
+	if ($env{'form.showgrading'} eq 'yes' 
+	    && $submitonly ne 'queued'
+	    && $submitonly ne 'all') {
+	    foreach (sort(@$partlist)) {
+		my $display_part=&get_display_part((split(/_/))[0],$symb);
+		$gradeTable.='<td><b>&nbsp;Part: '.$display_part.
+		    ' Status&nbsp;</b></td>';
+	    }
+	} elsif ($submitonly eq 'queued') {
+	    $gradeTable.='<td><b>&nbsp;'.&mt('Queue Status').'&nbsp;</b></td>';
+	}
+	$loop++;
+#	$gradeTable.='<td></td>' if ($loop%2 ==1);
+    }
+    $gradeTable.='</tr>'."\n";
+
+    my $ctr = 0;
+    foreach my $student (sort 
+			 {
+			     if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
+				 return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
+			     }
+			     return $a cmp $b;
+			 }
+			 (keys(%$fullname))) {
+	my ($uname,$udom) = split(/:/,$student);
+
+	my %status = ();
+
+	if ($submitonly eq 'queued') {
+	    my %queue_status = 
+		&Apache::bridgetask::get_student_status($symb,$cdom,$cnum,
+							$udom,$uname);
+	    next if (!defined($queue_status{'gradingqueue'}));
+	    $status{'gradingqueue'} = $queue_status{'gradingqueue'};
+	}
+
+	if ($env{'form.showgrading'} eq 'yes' 
+	    && $submitonly ne 'queued'
+	    && $submitonly ne 'all') {
+	    (%status) =&student_gradeStatus($symb,$udom,$uname,$partlist);
+	    my $submitted = 0;
+	    my $graded = 0;
+	    my $incorrect = 0;
+	    foreach (keys(%status)) {
+		$submitted = 1 if ($status{$_} ne 'nothing');
+		$graded = 1 if ($status{$_} =~ /^ungraded/);
+		$incorrect = 1 if ($status{$_} =~ /^incorrect/);
+		
+		my ($foo,$partid,$foo1) = split(/\./,$_);
+		if ($status{'resource.'.$partid.'.submitted_by'} ne '') {
+		    $submitted = 0;
+		    my ($part)=split(/\./,$partid);
+		    $gradeTable.='<input type="hidden" name="'.
+			$student.':'.$part.':submitted_by" value="'.
+			$status{'resource.'.$partid.'.submitted_by'}.'" />';
+		}
+	    }
+	    
+	    next if (!$submitted && ($submitonly eq 'yes' ||
+				     $submitonly eq 'incorrect' ||
+				     $submitonly eq 'graded'));
+	    next if (!$graded && ($submitonly eq 'graded'));
+	    next if (!$incorrect && $submitonly eq 'incorrect');
+	}
+
+	$ctr++;
+	my $section = $classlist->{$student}->[&Apache::loncoursedata::CL_SECTION()];
+        my $group = $classlist->{$student}->[&Apache::loncoursedata::CL_GROUP()];
+	if ( $perm{'vgr'} eq 'F' ) {
+	    $gradeTable.='<tr bgcolor="#ffffe6">' if ($ctr%2 ==1);
+	    $gradeTable.='<td align="right">'.$ctr.'&nbsp;</td>'.
+               '<td align="center"><label><input type=checkbox name="stuinfo" value="'.
+               $student.':'.$$fullname{$student}.':::SECTION'.$section.
+	       ')&nbsp;" />&nbsp;&nbsp;</label></td>'."\n".'<td>'.
+	       &nameUserString(undef,$$fullname{$student},$uname,$udom).
+	       '&nbsp;'.$section.'/'.$group.'</td>'."\n";
+
+	    if ($env{'form.showgrading'} eq 'yes' && $submitonly ne 'all') {
+		foreach (sort keys(%status)) {
+		    next if (/^resource.*?submitted_by$/);
+		    $gradeTable.='<td align="center">&nbsp;'.$status{$_}.'&nbsp;</td>'."\n";
+		}
+	    }
+#	    $gradeTable.='<td></td>' if ($ctr%2 ==1);
+	    $gradeTable.='</tr>'."\n" if ($ctr%2 ==0);
+	}
+    }
+    if ($ctr%2 ==1) {
+	$gradeTable.='<td>&nbsp;</td><td>&nbsp;</td><td>&nbsp;</td>';
+	    if ($env{'form.showgrading'} eq 'yes' 
+		&& $submitonly ne 'queued'
+		&& $submitonly ne 'all') {
+		foreach (@$partlist) {
+		    $gradeTable.='<td>&nbsp;</td>';
+		}
+	    } elsif ($submitonly eq 'queued') {
+		$gradeTable.='<td>&nbsp;</td>';
+	    }
+	$gradeTable.='</tr>';
+    }
+
+    $gradeTable.='</table></td></tr></table>'."\n".
+	'<input type="button" '.
+	'onClick="javascript:checkSelect(this.form.stuinfo);" '.
+	'value="Next->" /></form>'."\n";
+    if ($ctr == 0) {
+	my $num_students=(scalar(keys(%$fullname)));
+	if ($num_students eq 0) {
+	    $gradeTable='<br />&nbsp;<span class="LC_warning">There are no students currently enrolled.</span>';
+	} else {
+	    my $submissions='submissions';
+	    if ($submitonly eq 'incorrect') { $submissions = 'incorrect submissions'; }
+	    if ($submitonly eq 'graded'   ) { $submissions = 'ungraded submissions'; }
+	    if ($submitonly eq 'queued'   ) { $submissions = 'queued submissions'; }
+	    $gradeTable='<br />&nbsp;<span class="LC_warning">'.
+		'No '.$submissions.' found for this resource for any students. ('.$num_students.
+		' students checked for '.$submissions.')</span><br />';
+	}
+    } elsif ($ctr == 1) {
+	$gradeTable =~ s/type=checkbox/type=checkbox checked/;
+    }
+    $gradeTable.=&show_grading_menu_form($symb);
+    $request->print($gradeTable);
+    return '';
+}
+
+#---- Called from the listStudents routine
+
+sub check_script {
+    my ($form, $type)=@_;
+    my $chkallscript='<script type="text/javascript">
+    function checkall() {
+        for (i=0; i<document.forms.'.$form.'.elements.length; i++) {
+            ele = document.forms.'.$form.'.elements[i];
+            if (ele.name == "'.$type.'") {
+            document.forms.'.$form.'.elements[i].checked=true;
+                                       }
+        }
+    }
+
+    function checksec() {
+        for (i=0; i<document.forms.'.$form.'.elements.length; i++) {
+            ele = document.forms.'.$form.'.elements[i];
+           string = document.forms.'.$form.'.chksec.value;
+           if
+          (ele.value.indexOf(":::SECTION"+string)>0) {
+              document.forms.'.$form.'.elements[i].checked=true;
+            }
+        }
+    }
+
+
+    function uncheckall() {
+        for (i=0; i<document.forms.'.$form.'.elements.length; i++) {
+            ele = document.forms.'.$form.'.elements[i];
+            if (ele.name == "'.$type.'") {
+            document.forms.'.$form.'.elements[i].checked=false;
+                                       }
+        }
+    }
+
+</script>'."\n";
+    return $chkallscript;
+}
+
+sub check_buttons {
+    my $buttons.='<input type="button" onclick="checkall()" value="Check All" />';
+    $buttons.='<input type="button" onclick="uncheckall()" value="Uncheck All" />&nbsp;';
+    $buttons.='<input type="button" onclick="checksec()" value="Check Section/Group" />';
+    $buttons.='<input type="text" size="5" name="chksec" />&nbsp;';
+    return $buttons;
+}
+
+#     Displays the submissions for one student or a group of students
+sub processGroup {
+    my ($request)  = shift;
+    my $ctr        = 0;
+    my @stuchecked = &Apache::loncommon::get_env_multiple('form.stuinfo');
+    my $total      = scalar(@stuchecked)-1;
+
+    foreach my $student (@stuchecked) {
+	my ($uname,$udom,$fullname) = split(/:/,$student);
+	$env{'form.student'}        = $uname;
+	$env{'form.userdom'}        = $udom;
+	$env{'form.fullname'}       = $fullname;
+	&submission($request,$ctr,$total);
+	$ctr++;
+    }
+    return '';
+}
+
+#------------------------------------------------------------------------------------
+#
+#-------------------------- Next few routines handles grading by student, essentially
+#                           handles essay response type problem/part
+#
+#--- Javascript to handle the submission page functionality ---
+sub sub_page_js {
+    my $request = shift;
+    $request->print(<<SUBJAVASCRIPT);
+<script type="text/javascript" language="javascript">
+    function updateRadio(formname,id,weight) {
+	var gradeBox = formname["GD_BOX"+id];
+	var radioButton = formname["RADVAL"+id];
+	var oldpts = formname["oldpts"+id].value;
+	var pts = checkSolved(formname,id) == 'update' ? gradeBox.value : oldpts;
+	gradeBox.value = pts;
+	var resetbox = false;
+	if (isNaN(pts) || pts < 0) {
+	    alert("A number equal or greater than 0 is expected. Entered value = "+pts);
+	    for (var i=0; i<radioButton.length; i++) {
+		if (radioButton[i].checked) {
+		    gradeBox.value = i;
+		    resetbox = true;
+		}
+	    }
+	    if (!resetbox) {
+		formtextbox.value = "";
+	    }
+	    return;
+	}
+
+	if (pts > weight) {
+	    var resp = confirm("You entered a value ("+pts+
+			       ") greater than the weight for the part. Accept?");
+	    if (resp == false) {
+		gradeBox.value = oldpts;
+		return;
+	    }
+	}
+
+	for (var i=0; i<radioButton.length; i++) {
+	    radioButton[i].checked=false;
+	    if (pts == i && pts != "") {
+		radioButton[i].checked=true;
+	    }
+	}
+	updateSelect(formname,id);
+	formname["stores"+id].value = "0";
+    }
+
+    function writeBox(formname,id,pts) {
+	var gradeBox = formname["GD_BOX"+id];
+	if (checkSolved(formname,id) == 'update') {
+	    gradeBox.value = pts;
+	} else {
+	    var oldpts = formname["oldpts"+id].value;
+	    gradeBox.value = oldpts;
+	    var radioButton = formname["RADVAL"+id];
+	    for (var i=0; i<radioButton.length; i++) {
+		radioButton[i].checked=false;
+		if (i == oldpts) {
+		    radioButton[i].checked=true;
+		}
+	    }
+	}
+	formname["stores"+id].value = "0";
+	updateSelect(formname,id);
+	return;
+    }
+
+    function clearRadBox(formname,id) {
+	if (checkSolved(formname,id) == 'noupdate') {
+	    updateSelect(formname,id);
+	    return;
+	}
+	gradeSelect = formname["GD_SEL"+id];
+	for (var i=0; i<gradeSelect.length; i++) {
+	    if (gradeSelect[i].selected) {
+		var selectx=i;
+	    }
+	}
+	var stores = formname["stores"+id];
+	if (selectx == stores.value) { return };
+	var gradeBox = formname["GD_BOX"+id];
+	gradeBox.value = "";
+	var radioButton = formname["RADVAL"+id];
+	for (var i=0; i<radioButton.length; i++) {
+	    radioButton[i].checked=false;
+	}
+	stores.value = selectx;
+    }
+
+    function checkSolved(formname,id) {
+	if (formname["solved"+id].value == "correct_by_student" && formname.overRideScore.value == 'no') {
+	    var reply = confirm("This problem has been graded correct by the computer. Do you want to change the score?");
+	    if (!reply) {return "noupdate";}
+	    formname.overRideScore.value = 'yes';
+	}
+	return "update";
+    }
+
+    function updateSelect(formname,id) {
+	formname["GD_SEL"+id][0].selected = true;
+	return;
+    }
+
+//=========== Check that a point is assigned for all the parts  ============
+    function checksubmit(formname,val,total,parttot) {
+	formname.gradeOpt.value = val;
+	if (val == "Save & Next") {
+	    for (i=0;i<=total;i++) {
+		for (j=0;j<parttot;j++) {
+		    var partid = formname["partid"+i+"_"+j].value;
+		    if (formname["GD_SEL"+i+"_"+partid][0].selected) {
+			var points = formname["GD_BOX"+i+"_"+partid].value;
+			if (points == "") {
+			    var name = formname["name"+i].value;
+			    var studentID = (name != '' ? name : formname["unamedom"+i].value);
+			    var resp = confirm("You did not assign a score for "+studentID+
+					       ", part "+partid+". Continue?");
+			    if (resp == false) {
+				formname["GD_BOX"+i+"_"+partid].focus();
+				return false;
+			    }
+			}
+		    }
+		    
+		}
+	    }
+	    
+	}
+	if (val == "Grade Student") {
+	    formname.showgrading.value = "yes";
+	    if (formname.Status.value == "") {
+		formname.Status.value = "Active";
+	    }
+	    formname.studentNo.value = total;
+	}
+	formname.submit();
+    }
+
+//======= Check that a score is assigned for all the problems (page/sequence grading only) =========
+    function checkSubmitPage(formname,total) {
+	noscore = new Array(100);
+	var ptr = 0;
+	for (i=1;i<total;i++) {
+	    var partid = formname["q_"+i].value;
+	    if (formname["GD_SEL"+i+"_"+partid][0].selected) {
+		var points = formname["GD_BOX"+i+"_"+partid].value;
+		var status = formname["solved"+i+"_"+partid].value;
+		if (points == "" && status != "correct_by_student") {
+		    noscore[ptr] = i;
+		    ptr++;
+		}
+	    }
+	}
+	if (ptr != 0) {
+	    var sense = ptr == 1 ? ": " : "s: ";
+	    var prolist = "";
+	    if (ptr == 1) {
+		prolist = noscore[0];
+	    } else {
+		var i = 0;
+		while (i < ptr-1) {
+		    prolist += noscore[i]+", ";
+		    i++;
+		}
+		prolist += "and "+noscore[i];
+	    }
+	    var resp = confirm("You did not assign any score for the following problem"+sense+prolist+". Continue?");
+	    if (resp == false) {
+		return false;
+	    }
+	}
+
+	formname.submit();
+    }
+</script>
+SUBJAVASCRIPT
+}
+
+#--- javascript for essay type problem --
+sub sub_page_kw_js {
+    my $request = shift;
+    my $iconpath = $request->dir_config('lonIconsURL');
+    &commonJSfunctions($request);
+
+    my $inner_js_msg_central=<<INNERJS;
+    <script text="text/javascript">
+    function checkInput() {
+      opener.document.SCORE.msgsub.value = opener.checkEntities(document.msgcenter.msgsub.value);
+      var nmsg   = opener.document.SCORE.savemsgN.value;
+      var usrctr = document.msgcenter.usrctr.value;
+      var newval = opener.document.SCORE["newmsg"+usrctr];
+      newval.value = opener.checkEntities(document.msgcenter.newmsg.value);
+
+      var msgchk = "";
+      if (document.msgcenter.subchk.checked) {
+         msgchk = "msgsub,";
+      }
+      var includemsg = 0;
+      for (var i=1; i<=nmsg; i++) {
+          var opnmsg = opener.document.SCORE["savemsg"+i];
+          var frmmsg = document.msgcenter["msg"+i];
+          opnmsg.value = opener.checkEntities(frmmsg.value);
+          var showflg = opener.document.SCORE["shownOnce"+i];
+          showflg.value = "1";
+          var chkbox = document.msgcenter["msgn"+i];
+          if (chkbox.checked) {
+             msgchk += "savemsg"+i+",";
+             includemsg = 1;
+          }
+      }
+      if (document.msgcenter.newmsgchk.checked) {
+         msgchk += "newmsg"+usrctr;
+         includemsg = 1;
+      }
+      imgformname = opener.document.SCORE["mailicon"+usrctr];
+      imgformname.src = "$iconpath/"+((includemsg) ? "mailto.gif" : "mailbkgrd.gif");
+      var includemsg = opener.document.SCORE["includemsg"+usrctr];
+      includemsg.value = msgchk;
+
+      self.close()
+
+    }
+    </script>
+INNERJS
+
+    my $inner_js_highlight_central=<<INNERJS;
+ <script type="text/javascript">
+    function updateChoice(flag) {
+      opener.document.SCORE.kwclr.value = opener.radioSelection(document.hlCenter.kwdclr);
+      opener.document.SCORE.kwsize.value = opener.radioSelection(document.hlCenter.kwdsize);
+      opener.document.SCORE.kwstyle.value = opener.radioSelection(document.hlCenter.kwdstyle);
+      opener.document.SCORE.refresh.value = "on";
+      if (opener.document.SCORE.keywords.value!=""){
+         opener.document.SCORE.submit();
       }
+      self.close()
+    }
+</script>
+INNERJS
+
+    my $start_page_msg_central = 
+        &Apache::loncommon::start_page('Message Central',$inner_js_msg_central,
+				       {'js_ready'  => 1,
+					'only_body' => 1,
+					'bgcolor'   =>'#FFFFFF',});
+    my $end_page_msg_central = 
+	&Apache::loncommon::end_page({'js_ready' => 1});
+
+
+    my $start_page_highlight_central = 
+        &Apache::loncommon::start_page('Highlight Central',
+				       $inner_js_highlight_central,
+				       {'js_ready'  => 1,
+					'only_body' => 1,
+					'bgcolor'   =>'#FFFFFF',});
+    my $end_page_highlight_central = 
+	&Apache::loncommon::end_page({'js_ready' => 1});
+
+    my $docopen=&Apache::lonhtmlcommon::javascript_docopen();
+    $docopen=~s/^document\.//;
+    $request->print(<<SUBJAVASCRIPT);
+<script type="text/javascript" language="javascript">
+
+//===================== Show list of keywords ====================
+  function keywords(formname) {
+    var nret = prompt("Keywords list, separated by a space. Add/delete to list if desired.",formname.keywords.value);
+    if (nret==null) return;
+    formname.keywords.value = nret;
+
+    if (formname.keywords.value != "") {
+	formname.refresh.value = "on";
+	formname.submit();
+    }
+    return;
+  }
+
+//===================== Script to view submitted by ==================
+  function viewSubmitter(submitter) {
+    document.SCORE.refresh.value = "on";
+    document.SCORE.NCT.value = "1";
+    document.SCORE.unamedom0.value = submitter;
+    document.SCORE.submit();
+    return;
+  }
+
+//===================== Script to add keyword(s) ==================
+  function getSel() {
+    if (document.getSelection) txt = document.getSelection();
+    else if (document.selection) txt = document.selection.createRange().text;
+    else return;
+    var cleantxt = txt.replace(new RegExp('([\\f\\n\\r\\t\\v ])+', 'g')," ");
+    if (cleantxt=="") {
+	alert("Please select a word or group of words from document and then click this link.");
+	return;
+    }
+    var nret = prompt("Add selection to keyword list? Edit if desired.",cleantxt);
+    if (nret==null) return;
+    document.SCORE.keywords.value = document.SCORE.keywords.value+" "+nret;
+    if (document.SCORE.keywords.value != "") {
+	document.SCORE.refresh.value = "on";
+	document.SCORE.submit();
+    }
+    return;
   }
-  $request->print('</table>');
+
+//====================== Script for composing message ==============
+   // preload images
+   img1 = new Image();
+   img1.src = "$iconpath/mailbkgrd.gif";
+   img2 = new Image();
+   img2.src = "$iconpath/mailto.gif";
+
+  function msgCenter(msgform,usrctr,fullname) {
+    var Nmsg  = msgform.savemsgN.value;
+    savedMsgHeader(Nmsg,usrctr,fullname);
+    var subject = msgform.msgsub.value;
+    var msgchk = document.SCORE["includemsg"+usrctr].value;
+    re = /msgsub/;
+    var shwsel = "";
+    if (re.test(msgchk)) { shwsel = "checked" }
+    subject = (document.SCORE.shownSub.value == 0 ? checkEntities(subject) : subject);
+    displaySubject(checkEntities(subject),shwsel);
+    for (var i=1; i<=Nmsg; i++) {
+	var testmsg = "savemsg"+i+",";
+	re = new RegExp(testmsg,"g");
+	shwsel = "";
+	if (re.test(msgchk)) { shwsel = "checked" }
+	var message = document.SCORE["savemsg"+i].value;
+	message = (document.SCORE["shownOnce"+i].value == 0 ? checkEntities(message) : message);
+	displaySavedMsg(i,message,shwsel); //I do not get it. w/o checkEntities on saved messages,
+	                                   //any &lt; is already converted to <, etc. However, only once!!
+    }
+    newmsg = document.SCORE["newmsg"+usrctr].value;
+    shwsel = "";
+    re = /newmsg/;
+    if (re.test(msgchk)) { shwsel = "checked" }
+    newMsg(newmsg,shwsel);
+    msgTail(); 
+    return;
+  }
+
+  function checkEntities(strx) {
+    if (strx.length == 0) return strx;
+    var orgStr = ["&", "<", ">", '"']; 
+    var newStr = ["&amp;", "&lt;", "&gt;", "&quot;"];
+    var counter = 0;
+    while (counter < 4) {
+	strx = strReplace(strx,orgStr[counter],newStr[counter]);
+	counter++;
+    }
+    return strx;
+  }
+
+  function strReplace(strx, orgStr, newStr) {
+    return strx.split(orgStr).join(newStr);
+  }
+
+  function savedMsgHeader(Nmsg,usrctr,fullname) {
+    var height = 70*Nmsg+250;
+    var scrollbar = "no";
+    if (height > 600) {
+	height = 600;
+	scrollbar = "yes";
+    }
+    var xpos = (screen.width-600)/2;
+    xpos = (xpos < 0) ? '0' : xpos;
+    var ypos = (screen.height-height)/2-30;
+    ypos = (ypos < 0) ? '0' : ypos;
+
+    pWin = window.open('', 'MessageCenter', 'resizable=yes,toolbar=no,location=no,scrollbars='+scrollbar+',screenx='+xpos+',screeny='+ypos+',width=600,height='+height);
+    pWin.focus();
+    pDoc = pWin.document;
+    pDoc.$docopen;
+    pDoc.write('$start_page_msg_central');
+
+    pDoc.write("<form action=\\"inactive\\" name=\\"msgcenter\\">");
+    pDoc.write("<input value=\\""+usrctr+"\\" name=\\"usrctr\\" type=\\"hidden\\">");
+    pDoc.write("<h3><span class=\\"LC_info\\">&nbsp;Compose Message for \"+fullname+\"<\\/span><\\/h3><br /><br />");
+
+    pDoc.write("<table border=0 width=100%><tr><td bgcolor=\\"#777777\\">");
+    pDoc.write("<table border=0 width=100%><tr bgcolor=\\"#ddffff\\">");
+    pDoc.write("<td><b>Type<\\/b><\\/td><td><b>Include<\\/b><\\/td><td><b>Message<\\/td><\\/tr>");
+}
+    function displaySubject(msg,shwsel) {
+    pDoc = pWin.document;
+    pDoc.write("<tr bgcolor=\\"#ffffdd\\">");
+    pDoc.write("<td>Subject<\\/td>");
+    pDoc.write("<td align=\\"center\\"><input name=\\"subchk\\" type=\\"checkbox\\"" +shwsel+"><\\/td>");
+    pDoc.write("<td><input name=\\"msgsub\\" type=\\"text\\" value=\\""+msg+"\\"size=\\"60\\" maxlength=\\"80\\"><\\/td><\\/tr>");
+}
+
+  function displaySavedMsg(ctr,msg,shwsel) {
+    pDoc = pWin.document;
+    pDoc.write("<tr bgcolor=\\"#ffffdd\\">");
+    pDoc.write("<td align=\\"center\\">"+ctr+"<\\/td>");
+    pDoc.write("<td align=\\"center\\"><input name=\\"msgn"+ctr+"\\" type=\\"checkbox\\"" +shwsel+"><\\/td>");
+    pDoc.write("<td><textarea name=\\"msg"+ctr+"\\" cols=\\"60\\" rows=\\"3\\">"+msg+"<\\/textarea><\\/td><\\/tr>");
+}
+
+  function newMsg(newmsg,shwsel) {
+    pDoc = pWin.document;
+    pDoc.write("<tr bgcolor=\\"#ffffdd\\">");
+    pDoc.write("<td align=\\"center\\">New<\\/td>");
+    pDoc.write("<td align=\\"center\\"><input name=\\"newmsgchk\\" type=\\"checkbox\\"" +shwsel+"><\\/td>");
+    pDoc.write("<td><textarea name=\\"newmsg\\" cols=\\"60\\" rows=\\"3\\" onchange=\\"javascript:this.form.newmsgchk.checked=true\\" >"+newmsg+"<\\/textarea><\\/td><\\/tr>");
+}
+
+  function msgTail() {
+    pDoc = pWin.document;
+    pDoc.write("<\\/table>");
+    pDoc.write("<\\/td><\\/tr><\\/table>&nbsp;");
+    pDoc.write("<input type=\\"button\\" value=\\"Save\\" onClick=\\"javascript:checkInput()\\">&nbsp;&nbsp;");
+    pDoc.write("<input type=\\"button\\" value=\\"Cancel\\" onClick=\\"self.close()\\"><br /><br />");
+    pDoc.write("<\\/form>");
+    pDoc.write('$end_page_msg_central');
+    pDoc.close();
 }
 
+//====================== Script for keyword highlight options ==============
+  function kwhighlight() {
+    var kwclr    = document.SCORE.kwclr.value;
+    var kwsize   = document.SCORE.kwsize.value;
+    var kwstyle  = document.SCORE.kwstyle.value;
+    var redsel = "";
+    var grnsel = "";
+    var blusel = "";
+    if (kwclr=="red")   {var redsel="checked"};
+    if (kwclr=="green") {var grnsel="checked"};
+    if (kwclr=="blue")  {var blusel="checked"};
+    var sznsel = "";
+    var sz1sel = "";
+    var sz2sel = "";
+    if (kwsize=="0")  {var sznsel="checked"};
+    if (kwsize=="+1") {var sz1sel="checked"};
+    if (kwsize=="+2") {var sz2sel="checked"};
+    var synsel = "";
+    var syisel = "";
+    var sybsel = "";
+    if (kwstyle=="")    {var synsel="checked"};
+    if (kwstyle=="<i>") {var syisel="checked"};
+    if (kwstyle=="<b>") {var sybsel="checked"};
+    highlightCentral();
+    highlightbody('red','red',redsel,'0','normal',sznsel,'','normal',synsel);
+    highlightbody('green','green',grnsel,'+1','+1',sz1sel,'<i>','italic',syisel);
+    highlightbody('blue','blue',blusel,'+2','+2',sz2sel,'<b>','bold',sybsel);
+    highlightend();
+    return;
+  }
+
+  function highlightCentral() {
+//    if (window.hwdWin) window.hwdWin.close();
+    var xpos = (screen.width-400)/2;
+    xpos = (xpos < 0) ? '0' : xpos;
+    var ypos = (screen.height-330)/2-30;
+    ypos = (ypos < 0) ? '0' : ypos;
+
+    hwdWin = window.open('', 'KeywordHighlightCentral', 'resizeable=yes,toolbar=no,location=no,scrollbars=no,width=400,height=300,screenx='+xpos+',screeny='+ypos);
+    hwdWin.focus();
+    var hDoc = hwdWin.document;
+    hDoc.$docopen;
+    hDoc.write('$start_page_highlight_central');
+    hDoc.write("<form action=\\"inactive\\" name=\\"hlCenter\\">");
+    hDoc.write("<h3><span class=\\"LC_info\\">&nbsp;Keyword Highlight Options<\\/span><\\/h3><br /><br />");
 
-#FIXME - needs to handle multiple matches
-sub finduser {
-  my ($name) = @_;
-  my $domain = '';
-
-  if ( $Apache::grades::viewgrades eq 'F' ) {
-    #get classlist
-    my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});
-    my $chome=$ENV{"course.$ENV{'request.course.id'}.home"};
-    #print "Found $cdom:$cnum:$chome<br />";
-    my (%classlist) = &getclasslist($cdom,$cnum,$chome,'0');
-    foreach my $student ( sort(@{ $classlist{'allids'} }) ) {
-      my ($posname,$posdomain) = split(/:/,$student);
-      if ($posname =~ $name) { $name=$posname; $domain=$posdomain; last; }
-    }
-    return ($name,$domain);
-  } else {
-    return ($ENV{'user.name'},$ENV{'user.domain'});
+    hDoc.write("<table border=0 width=100%><tr><td bgcolor=\\"#777777\\">");
+    hDoc.write("<table border=0 width=100%><tr bgcolor=\\"#ddffff\\">");
+    hDoc.write("<td><b>Text Color<\\/b><\\/td><td><b>Font Size<\\/b><\\/td><td><b>Font Style<\\/td><\\/tr>");
   }
+
+  function highlightbody(clrval,clrtxt,clrsel,szval,sztxt,szsel,syval,sytxt,sysel) { 
+    var hDoc = hwdWin.document;
+    hDoc.write("<tr bgcolor=\\"#ffffdd\\">");
+    hDoc.write("<td align=\\"left\\">");
+    hDoc.write("<input name=\\"kwdclr\\" type=\\"radio\\" value=\\""+clrval+"\\" "+clrsel+">&nbsp;"+clrtxt+"<\\/td>");
+    hDoc.write("<td align=\\"left\\">");
+    hDoc.write("<input name=\\"kwdsize\\" type=\\"radio\\" value=\\""+szval+"\\" "+szsel+">&nbsp;"+sztxt+"<\\/td>");
+    hDoc.write("<td align=\\"left\\">");
+    hDoc.write("<input name=\\"kwdstyle\\" type=\\"radio\\" value=\\""+syval+"\\" "+sysel+">&nbsp;"+sytxt+"<\\/td>");
+    hDoc.write("<\\/tr>");
+  }
+
+  function highlightend() { 
+    var hDoc = hwdWin.document;
+    hDoc.write("<\\/table>");
+    hDoc.write("<\\/td><\\/tr><\\/table>&nbsp;");
+    hDoc.write("<input type=\\"button\\" value=\\"Save\\" onClick=\\"javascript:updateChoice(1)\\">&nbsp;&nbsp;");
+    hDoc.write("<input type=\\"button\\" value=\\"Cancel\\" onClick=\\"self.close()\\"><br /><br />");
+    hDoc.write("<\\/form>");
+    hDoc.write('$end_page_highlight_central');
+    hDoc.close();
+  }
+
+</script>
+SUBJAVASCRIPT
 }
 
-sub getclasslist {
-  my ($coursedomain,$coursenum,$coursehome,$hideexpired) = @_;
-  my $classlist=&Apache::lonnet::reply("dump:$coursedomain:$coursenum:classlist",$coursehome);
-  my %classlist=();
-  my $now = time;
-  foreach my $record (split /&/, $classlist) {
-    my ($name,$value)=split(/=/,&Apache::lonnet::unescape($record));
-    my ($end,$start)=split(/:/,$value);
-    # still a student?
-    if (($hideexpired) && ($end) && ($end < $now)) {
-      #print "Skipping:$name:$end:$now<br />\n";
-      next;
+sub get_increment {
+    my $increment = $env{'form.increment'};
+    if ($increment != 1 && $increment != .5 && $increment != .25 &&
+        $increment != .1) {
+        $increment = 1;
     }
-    #print "record=$record<br>";
-    push( @{ $classlist{'allids'} }, $name); 
-  }
-  return (%classlist);
+    return $increment;
 }
 
-sub getpartlist {
-  my ($url) = @_;
-  my @parts =();
-  my (@metakeys) = split(/,/,&Apache::lonnet::metadata($url,'keys'));
-  foreach my $key (@metakeys) {
-    if ( $key =~ m/stores_([0-9]+)_.*/ ) {
-      push(@parts,$key);
+#--- displays the grading box, used in essay type problem and grading by page/sequence
+sub gradeBox {
+    my ($request,$symb,$uname,$udom,$counter,$partid,$record) = @_;
+    my $checkIcon = '<img alt="'.&mt('Check Mark').
+	'" src="'.$request->dir_config('lonIconsURL').
+	'/check.gif" height="16" border="0" />';
+    my $wgt    = &Apache::lonnet::EXT('resource.'.$partid.'.weight',$symb,$udom,$uname);
+    my $wgtmsg = ($wgt > 0) ? &mt('(problem weight)') 
+                           : '<span class="LC_info">'.&mt('problem weight assigned by computer').'</span>';
+    $wgt       = ($wgt > 0 ? $wgt : '1');
+    my $score  = ($$record{'resource.'.$partid.'.awarded'} eq '' ?
+		  '' : &compute_points($$record{'resource.'.$partid.'.awarded'},$wgt));
+    my $result='<input type="hidden" name="WGT'.$counter.'_'.$partid.'" value="'.$wgt.'" />'."\n";
+    my $display_part= &get_display_part($partid,$symb);
+    my %last_resets = &get_last_resets($symb,$env{'request.course.id'},
+				       [$partid]);
+    my $aggtries = $$record{'resource.'.$partid.'.tries'};
+    if ($last_resets{$partid}) {
+        $aggtries = &get_num_tries($record,$last_resets{$partid},$partid);
     }
-  }
-  return @parts;
+    $result.='<table border="0"><tr><td>'.
+	'<b>Part: </b>'.$display_part.' <b>Points: </b></td><td>'."\n";
+    my $ctr = 0;
+    my $thisweight = 0;
+    my $increment = &get_increment();
+    $result.='<table border="0"><tr>'."\n";  # display radio buttons in a nice table 10 across
+    while ($thisweight<=$wgt) {
+	$result.= '<td><span style="white-space: nowrap;"><label><input type="radio" name="RADVAL'.$counter.'_'.$partid.'" '.
+	    'onclick="javascript:writeBox(this.form,\''.$counter.'_'.$partid.'\','.
+	    $thisweight.')" value="'.$thisweight.'" '.
+	    ($score eq $thisweight ? 'checked="checked"':'').' /> '.$thisweight."</label></span></td>\n";
+	$result.=(($ctr+1)%10 == 0 ? '</tr><tr>' : '');
+        $thisweight += $increment;
+	$ctr++;
+    }
+    $result.='</tr></table>';
+    $result.='</td><td>&nbsp;<b>or</b>&nbsp;</td>'."\n";
+    $result.='<td><input type="text" name="GD_BOX'.$counter.'_'.$partid.'"'.
+	($score ne ''? ' value = "'.$score.'"':'').' size="4" '.
+	'onChange="javascript:updateRadio(this.form,\''.$counter.'_'.$partid.'\','.
+	$wgt.')" /></td>'."\n";
+    $result.='<td>/'.$wgt.' '.$wgtmsg.
+	($$record{'resource.'.$partid.'.solved'} eq 'correct_by_student' ? '&nbsp;'.$checkIcon : '').
+	' </td><td>'."\n";
+    $result.='<select name="GD_SEL'.$counter.'_'.$partid.'" '.
+	'onChange="javascript:clearRadBox(this.form,\''.$counter.'_'.$partid.'\')" >'."\n";
+    if ($$record{'resource.'.$partid.'.solved'} eq 'excused') {
+	$result.='<option></option>'.
+	    '<option selected="selected">excused</option>';
+    } else {
+	$result.='<option selected="selected"></option>'.
+	    '<option>excused</option>';
+    }
+    $result.='<option>reset status</option></select>'."\n";
+    $result.="&nbsp;&nbsp;\n";
+    $result.='<input type="hidden" name="stores'.$counter.'_'.$partid.'" value="" />'."\n".
+	'<input type="hidden" name="oldpts'.$counter.'_'.$partid.'" value="'.$score.'" />'."\n".
+	'<input type="hidden" name="solved'.$counter.'_'.$partid.'" value="'.
+	$$record{'resource.'.$partid.'.solved'}.'" />'."\n".
+        '<input type="hidden" name="totaltries'.$counter.'_'.$partid.'" value="'.
+        $$record{'resource.'.$partid.'.tries'}.'" />'."\n".
+        '<input type="hidden" name="aggtries'.$counter.'_'.$partid.'" value="'.
+        $aggtries.'" />'."\n";
+    $result.='</td></tr></table>'."\n";
+    $result.=&handback_box($symb,$uname,$udom,$counter,$partid,$record);
+    return $result;
+}
+
+sub handback_box {
+    my ($symb,$uname,$udom,$counter,$partid,$record) = @_;
+    my ($partlist,$handgrade,$responseType) = &response_type($symb);
+    my (@respids);
+     my @part_response_id = &flatten_responseType($responseType);
+    foreach my $part_response_id (@part_response_id) {
+    	my ($part,$resp) = @{ $part_response_id };
+        if ($part eq $partid) {
+            push(@respids,$resp);
+        }
+    }
+    my $result;
+    foreach my $respid (@respids) {
+	my $prefix = $counter.'_'.$partid.'_'.$respid.'_';
+	my $files=&get_submitted_files($udom,$uname,$partid,$respid,$record);
+	next if (!@$files);
+	my $file_counter = 1;
+	foreach my $file (@$files) {
+	    if ($file =~ /\/portfolio\//) {
+    	        my ($file_path, $file_disp) = ($file =~ m|(.+/)(.+)$|);
+    	        my ($name,$version,$ext) = &file_name_version_ext($file_disp);
+    	        $file_disp = "$name.$ext";
+    	        $file = $file_path.$file_disp;
+    	        $result.=&mt('Return commented version of [_1] to student.',
+    			 '<span class="LC_filename">'.$file_disp.'</span>');
+    	        $result.='<input type="file"   name="'.$prefix.'returndoc'.$file_counter.'" />'."\n";
+    	        $result.='<input type="hidden" name="'.$prefix.'origdoc'.$file_counter.'" value="'.$file.'" /><br />';
+    	        $result.='(File will be uploaded when you click on Save &amp; Next below.)<br />';
+    	        $file_counter++;
+	    }
+	}
+    }
+    return $result;    
+}
+
+sub show_problem {
+    my ($request,$symb,$uname,$udom,$removeform,$viewon,$mode,$form) = @_;
+    my $rendered;
+    my %form = ((ref($form) eq 'HASH')? %{$form} : ());
+    &Apache::lonxml::remember_problem_counter();
+    if ($mode eq 'both' or $mode eq 'text') {
+	$rendered=&Apache::loncommon::get_student_view($symb,$uname,$udom,
+						       $env{'request.course.id'},
+						       undef,\%form);
+    }
+    if ($removeform) {
+	$rendered=~s|<form(.*?)>||g;
+	$rendered=~s|</form>||g;
+	$rendered=~s|(<input[^>]*name\s*=\s*"?)(\w+)("?)|$1would_have_been_$2$3|g;
+    }
+    my $companswer;
+    if ($mode eq 'both' or $mode eq 'answer') {
+	&Apache::lonxml::restore_problem_counter();
+	$companswer=
+	    &Apache::loncommon::get_student_answers($symb,$uname,$udom,
+						    $env{'request.course.id'},
+						    %form);
+    }
+    if ($removeform) {
+	$companswer=~s|<form(.*?)>||g;
+	$companswer=~s|</form>||g;
+	$companswer=~s|name="submit"|name="would_have_been_submit"|g;
+    }
+    my $result.='<table border="0" width="100%"><tr><td bgcolor="#777777">';
+    $result.='<table border="0" width="100%">';
+    if ($viewon) {
+	$result.='<tr><td bgcolor="#e6ffff"><b> ';
+	if ($mode eq 'both' or $mode eq 'text') {
+	    $result.='View of the problem - ';
+	} else {
+	    $result.='Correct answer: ';
+	}
+	$result.=$env{'form.fullname'}.'</b></td></tr>';
+    }
+    if ($mode eq 'both') {
+	$result.='<tr><td bgcolor="#ffffff">'.$rendered.'<br />';
+	$result.='<b>Correct answer:</b><br />'.$companswer;
+    } elsif ($mode eq 'text') {
+	$result.='<tr><td bgcolor="#ffffff">'.$rendered;
+    } elsif ($mode eq 'answer') {
+	$result.='<tr><td bgcolor="#ffffff">'.$companswer;
+    }
+    $result.='</td></tr></table>';
+    $result.='</td></tr></table><br />';
+    return $result;
+}
+
+sub files_exist {
+    my ($r, $symb) = @_;
+    my @students = &Apache::loncommon::get_env_multiple('form.stuinfo');
+
+    foreach my $student (@students) {
+        my ($uname,$udom,$fullname) = split(/:/,$student);
+        my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},
+					      $udom,$uname);
+        my ($string,$timestamp)= &get_last_submission(\%record);
+        foreach my $submission (@$string) {
+            my ($partid,$respid) =
+		($submission =~ /^resource\.([^\.]*)\.([^\.]*)\.submission/);
+            my $files=&get_submitted_files($udom,$uname,$partid,$respid,
+					   \%record);
+            return 1 if (@$files);
+        }
+    }
+    return 0;
+}
+
+sub download_all_link {
+    my ($r,$symb) = @_;
+    my $all_students = 
+	join("\n", &Apache::loncommon::get_env_multiple('form.stuinfo'));
+
+    my $parts =
+	join("\n",&Apache::loncommon::get_env_multiple('form.vPart'));
+
+    my $identifier = &Apache::loncommon::get_cgi_id();
+    &Apache::lonnet::appenv('cgi.'.$identifier.'.students' => $all_students,
+                            'cgi.'.$identifier.'.symb' => $symb,
+                            'cgi.'.$identifier.'.parts' => $parts,);
+    $r->print('<a href="/cgi-bin/multidownload.pl?'.$identifier.'">'.
+	      &mt('Download All Submitted Documents').'</a>');
+    return
+}
+
+sub build_section_inputs {
+    my $section_inputs;
+    if ($env{'form.section'} eq '') {
+        $section_inputs .= '<input type="hidden" name="section" value="all" />'."\n";
+    } else {
+        my @sections = &Apache::loncommon::get_env_multiple('form.section');
+        foreach my $section (@sections) {
+            $section_inputs .= '<input type="hidden" name="section" value="'.$section.'" />'."\n";
+        }
+    }
+    return $section_inputs;
+}
+
+# --------------------------- show submissions of a student, option to grade 
+sub submission {
+    my ($request,$counter,$total) = @_;
+    my ($uname,$udom)     = ($env{'form.student'},$env{'form.userdom'});
+    $udom = ($udom eq '' ? $env{'user.domain'} : $udom); #has form.userdom changed for a student?
+    my $usec = &Apache::lonnet::getsection($udom,$uname,$env{'request.course.id'});
+    $env{'form.fullname'} = &Apache::loncommon::plainname($uname,$udom,'lastname') if $env{'form.fullname'} eq '';
+    my $symb = &get_symb($request); 
+    if ($symb eq '') { $request->print("Unable to handle ambiguous references:."); return ''; }
+
+    if (!&canview($usec)) {
+	$request->print('<span class="LC_warning">Unable to view requested student.('.
+			$uname.':'.$udom.' in section '.$usec.' in course id '.
+			$env{'request.course.id'}.')</span>');
+	$request->print(&show_grading_menu_form($symb));
+	return;
+    }
+
+    if (!$env{'form.lastSub'}) { $env{'form.lastSub'} = 'datesub'; }
+    if (!$env{'form.vProb'}) { $env{'form.vProb'} = 'yes'; }
+    if (!$env{'form.vAns'}) { $env{'form.vAns'} = 'yes'; }
+    my $last = ($env{'form.lastSub'} eq 'last' ? 'last' : '');
+    my $checkIcon = '<img alt="'.&mt('Check Mark').
+	'" src="'.$request->dir_config('lonIconsURL').
+	'/check.gif" height="16" border="0" />';
+
+    my %old_essays;
+    # header info
+    if ($counter == 0) {
+	&sub_page_js($request);
+	&sub_page_kw_js($request) if ($env{'form.handgrade'} eq 'yes');
+	$env{'form.probTitle'} = $env{'form.probTitle'} eq '' ? 
+	    &Apache::lonnet::gettitle($symb) : $env{'form.probTitle'};
+	if ($env{'form.handgrade'} eq 'yes' && &files_exist($request, $symb)) {
+	    &download_all_link($request, $symb);
+	}
+	$request->print('<h3>&nbsp;<span class="LC_info">Submission Record</span></h3>'."\n".
+			'<h4>&nbsp;<b>Resource: </b>'.$env{'form.probTitle'}.'</h4>'."\n");
+
+	if ($env{'form.handgrade'} eq 'no') {
+	    my $checkMark='<br /><br />&nbsp;<b>Note:</b> Part(s) graded correct by the computer is marked with a '.
+		$checkIcon.' symbol.'."\n";
+	    $request->print($checkMark);
+	}
+
+	# option to display problem, only once else it cause problems 
+        # with the form later since the problem has a form.
+	if ($env{'form.vProb'} eq 'yes' or $env{'form.vAns'} eq 'yes') {
+	    my $mode;
+	    if ($env{'form.vProb'} eq 'yes' && $env{'form.vAns'} eq 'yes') {
+		$mode='both';
+	    } elsif ($env{'form.vProb'} eq 'yes') {
+		$mode='text';
+	    } elsif ($env{'form.vAns'} eq 'yes') {
+		$mode='answer';
+	    }
+	    &Apache::lonxml::clear_problem_counter();
+	    $request->print(&show_problem($request,$symb,$uname,$udom,0,1,$mode));
+	}
+
+	# kwclr is the only variable that is guaranteed to be non blank 
+        # if this subroutine has been called once.
+	my %keyhash = ();
+	if ($env{'form.kwclr'} eq '' && $env{'form.handgrade'} eq 'yes') {
+	    %keyhash = &Apache::lonnet::dump('nohist_handgrade',
+					     $env{'course.'.$env{'request.course.id'}.'.domain'},
+					     $env{'course.'.$env{'request.course.id'}.'.num'});
+
+	    my $loginuser = $env{'user.name'}.':'.$env{'user.domain'};
+	    $env{'form.keywords'} = $keyhash{$symb.'_keywords'} ne '' ? $keyhash{$symb.'_keywords'} : '';
+	    $env{'form.kwclr'}    = $keyhash{$loginuser.'_kwclr'} ne '' ? $keyhash{$loginuser.'_kwclr'} : 'red';
+	    $env{'form.kwsize'}   = $keyhash{$loginuser.'_kwsize'} ne '' ? $keyhash{$loginuser.'_kwsize'} : '0';
+	    $env{'form.kwstyle'}  = $keyhash{$loginuser.'_kwstyle'} ne '' ? $keyhash{$loginuser.'_kwstyle'} : '';
+	    $env{'form.msgsub'}   = $keyhash{$symb.'_subject'} ne '' ? 
+		$keyhash{$symb.'_subject'} : $env{'form.probTitle'};
+	    $env{'form.savemsgN'} = $keyhash{$symb.'_savemsgN'} ne '' ? $keyhash{$symb.'_savemsgN'} : '0';
+	}
+	my $overRideScore = $env{'form.overRideScore'} eq '' ? 'no' : $env{'form.overRideScore'};
+	my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
+	$request->print('<form action="/adm/grades" method="post" name="SCORE" enctype="multipart/form-data">'."\n".
+			'<input type="hidden" name="command"    value="handgrade" />'."\n".
+			'<input type="hidden" name="saveState"  value="'.$env{'form.saveState'}.'" />'."\n".
+			'<input type="hidden" name="Status"     value="'.$stu_status.'" />'."\n".
+			'<input type="hidden" name="overRideScore" value="'.$overRideScore.'" />'."\n".
+			'<input type="hidden" name="probTitle"  value="'.$env{'form.probTitle'}.'" />'."\n".
+			'<input type="hidden" name="refresh"    value="off" />'."\n".
+			'<input type="hidden" name="studentNo"  value="" />'."\n".
+			'<input type="hidden" name="gradeOpt"   value="" />'."\n".
+			'<input type="hidden" name="symb"       value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
+			'<input type="hidden" name="showgrading" value="'.$env{'form.showgrading'}.'" />'."\n".
+			'<input type="hidden" name="vProb"      value="'.$env{'form.vProb'}.'" />'."\n".
+			'<input type="hidden" name="vAns"       value="'.$env{'form.vAns'}.'" />'."\n".
+			'<input type="hidden" name="lastSub"    value="'.$env{'form.lastSub'}.'" />'."\n".
+			&build_section_inputs().
+			'<input type="hidden" name="submitonly" value="'.$env{'form.submitonly'}.'" />'."\n".
+			'<input type="hidden" name="handgrade"  value="'.$env{'form.handgrade'}.'" />'."\n".
+			'<input type="hidden" name="NCT"'.
+			' value="'.($env{'form.NTSTU'} ne '' ? $env{'form.NTSTU'} : $total+1).'" />'."\n");
+	if ($env{'form.handgrade'} eq 'yes') {
+	    $request->print('<input type="hidden" name="keywords" value="'.$env{'form.keywords'}.'" />'."\n".
+			    '<input type="hidden" name="kwclr"    value="'.$env{'form.kwclr'}.'" />'."\n".
+			    '<input type="hidden" name="kwsize"   value="'.$env{'form.kwsize'}.'" />'."\n".
+			    '<input type="hidden" name="kwstyle"  value="'.$env{'form.kwstyle'}.'" />'."\n".
+			    '<input type="hidden" name="msgsub"   value="'.$env{'form.msgsub'}.'" />'."\n".
+			    '<input type="hidden" name="shownSub" value="0" />'."\n".
+			    '<input type="hidden" name="savemsgN" value="'.$env{'form.savemsgN'}.'" />'."\n");
+	    foreach my $partid (&Apache::loncommon::get_env_multiple('form.vPart')) {
+		$request->print('<input type="hidden" name="vPart" value="'.$partid.'" />'."\n");
+	    }
+	}
+	
+	my ($cts,$prnmsg) = (1,'');
+	while ($cts <= $env{'form.savemsgN'}) {
+	    $prnmsg.='<input type="hidden" name="savemsg'.$cts.'" value="'.
+		(!exists($keyhash{$symb.'_savemsg'.$cts}) ? 
+		 &Apache::lonfeedback::clear_out_html($env{'form.savemsg'.$cts}) :
+		 &Apache::lonfeedback::clear_out_html($keyhash{$symb.'_savemsg'.$cts})).
+		'" />'."\n".
+		'<input type="hidden" name="shownOnce'.$cts.'" value="0" />'."\n";
+	    $cts++;
+	}
+	$request->print($prnmsg);
+
+	if ($env{'form.handgrade'} eq 'yes' && $env{'form.showgrading'} eq 'yes') {
+#
+# Print out the keyword options line
+#
+	    $request->print(<<KEYWORDS);
+&nbsp;<b>Keyword Options:</b>&nbsp;
+<a href="javascript:keywords(document.SCORE);" target="_self">List</a>&nbsp; &nbsp;
+<a href="#" onMouseDown="javascript:getSel(); return false"
+ CLASS="page">Paste Selection to List</a>&nbsp; &nbsp;
+<a href="javascript:kwhighlight();" target="_self">Highlight Attribute</a><br /><br />
+KEYWORDS
+#
+# Load the other essays for similarity check
+#
+            my (undef,undef,$essayurl) = &Apache::lonnet::decode_symb($symb);
+	    my ($adom,$aname,$apath)=($essayurl=~/^($LONCAPA::domain_re)\/($LONCAPA::username_re)\/(.*)$/);
+	    $apath=&escape($apath);
+	    $apath=~s/\W/\_/gs;
+	    %old_essays=&Apache::lonnet::dump('nohist_essay_'.$apath,$adom,$aname);
+        }
+    }
+
+# This is where output for one specific student would start
+    my $bgcolor='#DDEEDD';
+    if ($counter%2) { $bgcolor='#DDDDEE'; }
+    $request->print("\n\n".
+                    '<p><table border="2"><tr><th bgcolor="'.$bgcolor.'">'.$env{'form.fullname'}.'</th></tr><tr><td bgcolor="'.$bgcolor.'">');
+
+    if ($env{'form.vProb'} eq 'all' or $env{'form.vAns'} eq 'all') {
+	my $mode;
+	if ($env{'form.vProb'} eq 'all' && $env{'form.vAns'} eq 'all') {
+	    $mode='both';
+	} elsif ($env{'form.vProb'} eq 'all' ) {
+	    $mode='text';
+	} elsif ($env{'form.vAns'} eq 'all') {
+	    $mode='answer';
+	}
+	&Apache::lonxml::clear_problem_counter();
+	$request->print(&show_problem($request,$symb,$uname,$udom,1,1,$mode));
+    }
+
+    my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},$udom,$uname);
+    my ($partlist,$handgrade,$responseType) = &response_type($symb);
+
+    # Display student info
+    $request->print(($counter == 0 ? '' : '<br />'));
+    my $result='<table border="0" width="100%"><tr><td bgcolor="#777777">'."\n".
+	'<table border="0" width="100%"><tr bgcolor="#edffff"><td>'."\n";
+
+    $result.='<b>Fullname: </b>'.&nameUserString(undef,$env{'form.fullname'},$uname,$udom).'<br />'."\n";
+    $result.='<input type="hidden" name="name'.$counter.
+	'" value="'.$env{'form.fullname'}.'" />'."\n";
+
+    # If any part of the problem is an essay-response (handgraded), then check for collaborators
+    my $fullname;
+    my $col_fullnames = [];
+    if ($env{'form.handgrade'} eq 'yes') {
+	(my $sub_result,$fullname,$col_fullnames)=
+	    &check_collaborators($symb,$uname,$udom,\%record,$handgrade,
+				 $counter);
+	$result.=$sub_result;
+    }
+    $request->print($result."\n");
+
+    # print student answer/submission
+    # Options are (1) Handgaded submission only
+    #             (2) Last submission, includes submission that is not handgraded 
+    #                  (for multi-response type part)
+    #             (3) Last submission plus the parts info
+    #             (4) The whole record for this student
+    if ($env{'form.lastSub'} =~ /^(lastonly|hdgrade)$/) {
+	my ($string,$timestamp)= &get_last_submission(\%record);
+	my $lastsubonly=''.
+	    ($$timestamp eq '' ? '' : '<b>Date Submitted:</b> '.
+	     $$timestamp)."</td></tr>\n";
+	if ($$timestamp eq '') {
+	    $lastsubonly.='<tr><td bgcolor="#ffffe6">'.$$string[0]; 
+	} else {
+	    my %seenparts;
+	    my @part_response_id = &flatten_responseType($responseType);
+	    foreach my $part (@part_response_id) {
+		next if ($env{'form.lastSub'} eq 'hdgrade' 
+			 && $$handgrade{$$part[0].'_'.$$part[1]} ne 'yes');
+
+		my ($partid,$respid) = @{ $part };
+		my $display_part=&get_display_part($partid,$symb);
+		if ($env{"form.$uname:$udom:$partid:submitted_by"}) {
+		    if (exists($seenparts{$partid})) { next; }
+		    $seenparts{$partid}=1;
+		    my $submitby='<b>Part:</b> '.$display_part.
+			' <b>Collaborative submission by:</b> '.
+			'<a href="javascript:viewSubmitter(\''.
+			$env{"form.$uname:$udom:$partid:submitted_by"}.
+			'\');" target="_self">'.
+			$$fullname{$env{"form.$uname:$udom:$partid:submitted_by"}}.'</a><br />';
+		    $request->print($submitby);
+		    next;
+		}
+		my $responsetype = $responseType->{$partid}->{$respid};
+		if (!exists($record{"resource.$partid.$respid.submission"})) {
+		    $lastsubonly.='<tr><td bgcolor="#ffffe6"><b>Part:</b> '.
+			$display_part.' <span class="LC_internal_info">( ID '.$respid.
+			' )</span>&nbsp; &nbsp;'.
+			'<span class="LC_warning">Nothing submitted - no attempts</span><br /><br />';
+		    next;
+		}
+		foreach (@$string) {
+		    my ($partid,$respid) = /^resource\.([^\.]*)\.([^\.]*)\.submission/;
+		    if (join('_',@{$part}) ne ($partid.'_'.$respid)) { next; }
+		    my ($ressub,$subval) = split(/:/,$_,2);
+		    # Similarity check
+		    my $similar='';
+		    if($env{'form.checkPlag'}){
+			my ($oname,$odom,$ocrsid,$oessay,$osim)=
+			    &most_similar($uname,$udom,$subval,\%old_essays);
+			if ($osim) {
+			    $osim=int($osim*100.0);
+			    my %old_course_desc = 
+				&Apache::lonnet::coursedescription($ocrsid,
+								   {'one_time' => 1});
+
+			    $similar="<hr /><h3><span class=\"LC_warning\">".
+				&mt('Essay is [_1]% similar to an essay by [_2] ([_3]:[_4]) in course [_5] (course id [_6]:[_7])',
+				    $osim,
+				    &Apache::loncommon::plainname($oname,$odom),
+				    $oname,$odom,
+				    $old_course_desc{'description'},
+				    $old_course_desc{'num'},
+				    $old_course_desc{'domain'}).
+				'</span></h3><blockquote><i>'.
+				&keywords_highlight($oessay).
+				'</i></blockquote><hr />';
+			}
+		    }
+		    my $order=&get_order($partid,$respid,$symb,$uname,$udom);
+		    if ($env{'form.lastSub'} eq 'lastonly' || 
+			($env{'form.lastSub'} eq 'hdgrade' && 
+			 $$handgrade{$$part[0].'_'.$$part[1]} eq 'yes')) {
+			my $display_part=&get_display_part($partid,$symb);
+			$lastsubonly.='<tr><td bgcolor="#ffffe6"><b>Part:</b> '.
+			    $display_part.' <span class="LC_internal_info">( ID '.$respid.
+			    ' )</span>&nbsp; &nbsp;';
+			my $files=&get_submitted_files($udom,$uname,$partid,$respid,\%record);
+			if (@$files) {
+			    $lastsubonly.='<br /><span class="LC_warning">Like all files provided by users, this file may contain virusses</span><br />';
+			    my $file_counter = 0;
+			    foreach my $file (@$files) {
+			        $file_counter ++;
+				&Apache::lonnet::allowuploaded('/adm/grades',$file);
+				$lastsubonly.='<br /><a href="'.$file.'?rawmode=1" target="lonGRDs"><img src="'.&Apache::loncommon::icon($file).'" border=0"> '.$file.'</a>';
+			    }
+			    $lastsubonly.='<br />';
+			}
+			$lastsubonly.='<b>Submitted Answer: </b>'.
+			    &cleanRecord($subval,$responsetype,$symb,$partid,
+					 $respid,\%record,$order);
+			if ($similar) {$lastsubonly.="<br /><br />$similar\n";}
+		    }
+		}
+	    }
+	}
+	$lastsubonly.='</td></tr><tr bgcolor="#ffffff"><td>'."\n";
+	$request->print($lastsubonly);
+    } elsif ($env{'form.lastSub'} eq 'datesub') {
+	my (undef,$responseType,undef,$parts) = &showResourceInfo($symb);
+	$request->print(&displaySubByDates($symb,\%record,$parts,$responseType,$checkIcon,$uname,$udom));
+    } elsif ($env{'form.lastSub'} =~ /^(last|all)$/) {
+	$request->print(&Apache::loncommon::get_previous_attempt($symb,$uname,$udom,
+								 $env{'request.course.id'},
+								 $last,'.submission',
+								 'Apache::grades::keywords_highlight'));
+    }
+
+    $request->print('<input type="hidden" name="unamedom'.$counter.'" value="'.$uname.':'
+	.$udom.'" />'."\n");
+    
+    # return if view submission with no grading option
+    if ($env{'form.showgrading'} eq '' || (!&canmodify($usec))) {
+	my $toGrade.='<input type="button" value="Grade Student" '.
+	    'onClick="javascript:checksubmit(this.form,\'Grade Student\',\''
+	    .$counter.'\');" target="_self" /> &nbsp;'."\n" if (&canmodify($usec));
+	$toGrade.='</td></tr></table></td></tr></table>'."\n";
+	if (($env{'form.command'} eq 'submission') || 
+	    ($env{'form.command'} eq 'processGroup' && $counter == $total)) {
+	    $toGrade.='</form>'.&show_grading_menu_form($symb); 
+	}
+	$request->print($toGrade);
+	return;
+    } else {
+	$request->print('</td></tr></table></td></tr></table>'."\n");
+    }
+
+    # essay grading message center
+    if ($env{'form.handgrade'} eq 'yes') {
+	my ($lastname,$givenn) = split(/,/,$env{'form.fullname'});
+	my $msgfor = $givenn.' '.$lastname;
+	if (scalar(@$col_fullnames) > 0) {
+	    my $lastone = pop(@$col_fullnames);
+	    $msgfor .= ', '.(join ', ',@$col_fullnames).' and '.$lastone.'.';
+	}
+	$msgfor =~ s/\'/\\'/g; #' stupid emacs - no! javascript
+	$result='<input type="hidden" name="includemsg'.$counter.'" value="" />'."\n".
+	    '<input type="hidden" name="newmsg'.$counter.'" value="" />'."\n";
+	$result.='&nbsp;<a href="javascript:msgCenter(document.SCORE,'.$counter.
+	    ',\''.$msgfor.'\');" target="_self">'.
+	    &mt('Compose message to student').(scalar(@$col_fullnames) >= 1 ? 's' : '').'</a><label> ('.
+	    &mt('incl. grades').' <input type="checkbox" name="withgrades'.$counter.'" /></label>)'.
+	    '<img src="'.$request->dir_config('lonIconsURL').
+	    '/mailbkgrd.gif" width="14" height="10" name="mailicon'.$counter.'" />'."\n".
+	    '<br />&nbsp;('.
+	    &mt('Message will be sent when you click on Save & Next below.').")\n";
+	$request->print($result);
+    }
+    if ($perm{'vgr'}) {
+	$request->print('<br />'.
+	    &Apache::loncommon::track_student_link(&mt('View recent activity'),
+						   $uname,$udom,'check'));
+    }
+    if ($perm{'opa'}) {
+	$request->print('<br />'.
+	    &Apache::loncommon::pprmlink(&mt('Set/Change parameters'),
+					 $uname,$udom,$symb,'check'));
+    }
+
+    my %seen = ();
+    my @partlist;
+    my @gradePartRespid;
+    my @part_response_id = &flatten_responseType($responseType);
+    foreach my $part_response_id (@part_response_id) {
+    	my ($partid,$respid) = @{ $part_response_id };
+	my $part_resp = join('_',@{ $part_response_id });
+	next if ($seen{$partid} > 0);
+	$seen{$partid}++;
+	next if ($$handgrade{$part_resp} ne 'yes' 
+		 && $env{'form.lastSub'} eq 'hdgrade');
+	push @partlist,$partid;
+	push @gradePartRespid,$partid.'.'.$respid;
+	$request->print(&gradeBox($request,$symb,$uname,$udom,$counter,$partid,\%record));
+    }
+    $result='<input type="hidden" name="partlist'.$counter.
+	'" value="'.(join ":",@partlist).'" />'."\n";
+    $result.='<input type="hidden" name="gradePartRespid'.
+	'" value="'.(join ":",@gradePartRespid).'" />'."\n" if ($counter == 0);
+    my $ctr = 0;
+    while ($ctr < scalar(@partlist)) {
+	$result.='<input type="hidden" name="partid'.$counter.'_'.$ctr.'" value="'.
+	    $partlist[$ctr].'" />'."\n";
+	$ctr++;
+    }
+    $request->print($result.'</td></tr></table></td></tr></table>'."\n");
+
+# Done with printing info for one student
+
+    $request->print('</td></tr></table></p>');
+
+
+    # print end of form
+    if ($counter == $total) {
+	my $endform='<table border="0"><tr><td>'."\n";
+	$endform.='<input type="button" value="Save & Next" '.
+	    'onClick="javascript:checksubmit(this.form,\'Save & Next\','.
+	    $total.','.scalar(@partlist).');" target="_self" /> &nbsp;'."\n";
+	my $ntstu ='<select name="NTSTU">'.
+	    '<option>1</option><option>2</option>'.
+	    '<option>3</option><option>5</option>'.
+	    '<option>7</option><option>10</option></select>'."\n";
+	my $nsel = ($env{'form.NTSTU'} ne '' ? $env{'form.NTSTU'} : '1');
+	$ntstu =~ s/<option>$nsel</<option selected="selected">$nsel</;
+	$endform.=$ntstu.'student(s) &nbsp;&nbsp;';
+	$endform.='<input type="button" value="Previous" '.
+	    'onClick="javascript:checksubmit(this.form,\'Previous\');" target="_self" /> &nbsp;'."\n".
+	    '<input type="button" value="Next" '.
+	    'onClick="javascript:checksubmit(this.form,\'Next\');" target="_self" /> &nbsp;';
+	$endform.='(Next and Previous (student) do not save the scores.)'."\n" ;
+        $endform.="<input type='hidden' value='".&get_increment().
+            "' name='increment' />";
+	$endform.='</td><tr></table></form>';
+	$endform.=&show_grading_menu_form($symb);
+	$request->print($endform);
+    }
+    return '';
+}
+
+sub check_collaborators {
+    my ($symb,$uname,$udom,$record,$handgrade,$counter) = @_;
+    my ($result,@col_fullnames);
+    my ($classlist,undef,$fullname) = &getclasslist('all','0');
+    foreach my $part (keys(%$handgrade)) {
+	my $ncol = &Apache::lonnet::EXT('resource.'.$part.
+					'.maxcollaborators',
+					$symb,$udom,$uname);
+	next if ($ncol <= 0);
+	$part =~ s/\_/\./g;
+	next if ($record->{'resource.'.$part.'.collaborators'} eq '');
+	my (@good_collaborators, @bad_collaborators);
+	foreach my $possible_collaborator
+	    (split(/,?\s+/,$record->{'resource.'.$part.'.collaborators'})) { 
+	    $possible_collaborator =~ s/[\$\^\(\)]//g;
+	    next if ($possible_collaborator eq '');
+	    my ($co_name,$co_dom) = split(/\@|:/,$possible_collaborator);
+	    $co_dom = $udom if (! defined($co_dom) || $co_dom =~ /^domain$/i);
+	    next if ($co_name eq $uname && $co_dom eq $udom);
+	    # Doing this grep allows 'fuzzy' specification
+	    my @matches = grep(/^\Q$co_name\E:\Q$co_dom\E$/i, 
+			       keys(%$classlist));
+	    if (! scalar(@matches)) {
+		push(@bad_collaborators, $possible_collaborator);
+	    } else {
+		push(@good_collaborators, @matches);
+	    }
+	}
+	if (scalar(@good_collaborators) != 0) {
+	    $result.='<br />'.&mt('Collaborators: ');
+	    foreach my $name (@good_collaborators) {
+		my ($lastname,$givenn) = split(/,/,$$fullname{$name});
+		push(@col_fullnames, $givenn.' '.$lastname);
+		$result.=$fullname->{$name}.'&nbsp; &nbsp; &nbsp;';
+	    }
+	    $result.='<br />'."\n";
+	    my ($part)=split(/\./,$part);
+	    $result.='<input type="hidden" name="collaborator'.$counter.
+		'" value="'.$part.':'.(join ':',@good_collaborators).'" />'.
+		"\n";
+	}
+	if (scalar(@bad_collaborators) > 0) {
+	    $result.='<div class="LC_warning">';
+	    $result.=&mt('This student has submitted [quant,_1,invalid collaborator]: [_2]',scalar(@bad_collaborators),join(', ',@bad_collaborators));
+	    $result .= '</div>';
+	}         
+	if (scalar(@bad_collaborators > $ncol)) {
+	    $result .= '<div class="LC_warning">';
+	    $result .= &mt('This student has submitted too many '.
+		'collaborators.  Maximum is [_1].',$ncol);
+	    $result .= '</div>';
+	}
+    }
+    return ($result,$fullname,\@col_fullnames);
+}
+
+#--- Retrieve the last submission for all the parts
+sub get_last_submission {
+    my ($returnhash)=@_;
+    my (@string,$timestamp);
+    if ($$returnhash{'version'}) {
+	my %lasthash=();
+	my ($version);
+	for ($version=1;$version<=$$returnhash{'version'};$version++) {
+	    foreach my $key (sort(split(/\:/,
+					$$returnhash{$version.':keys'}))) {
+		$lasthash{$key}=$$returnhash{$version.':'.$key};
+		$timestamp = 
+		    scalar(localtime($$returnhash{$version.':timestamp'}));
+	    }
+	}
+	foreach my $key (keys(%lasthash)) {
+	    next if ($key !~ /\.submission$/);
+
+	    my ($partid,$foo) = split(/submission$/,$key);
+	    my $draft  = $lasthash{$partid.'awarddetail'} eq 'DRAFT' ?
+		'<span class="LC_warning">Draft Copy</span> ' : '';
+	    push(@string, join(':', $key, $draft.$lasthash{$key}));
+	}
+    }
+    if (!@string) {
+	$string[0] =
+	    '<span class="LC_warning">Nothing submitted - no attempts.</span>';
+    }
+    return (\@string,\$timestamp);
+}
+
+#--- High light keywords, with style choosen by user.
+sub keywords_highlight {
+    my $string    = shift;
+    my $size      = $env{'form.kwsize'} eq '0' ? '' : 'size='.$env{'form.kwsize'};
+    my $styleon   = $env{'form.kwstyle'} eq ''  ? '' : $env{'form.kwstyle'};
+    (my $styleoff = $styleon) =~ s/\</\<\//;
+    my @keylist   = split(/[,\s+]/,$env{'form.keywords'});
+    foreach my $keyword (@keylist) {
+	$string =~ s/\b\Q$keyword\E(\b|\.)/<font color\=$env{'form.kwclr'} $size\>$styleon$keyword$styleoff<\/font>/gi;
+    }
+    return $string;
+}
+
+#--- Called from submission routine
+sub processHandGrade {
+    my ($request) = shift;
+    my $symb   = &get_symb($request);
+    my (undef,undef,$url) = &Apache::lonnet::decode_symb($symb);
+    my $button = $env{'form.gradeOpt'};
+    my $ngrade = $env{'form.NCT'};
+    my $ntstu  = $env{'form.NTSTU'};
+    my $cdom   = $env{'course.'.$env{'request.course.id'}.'.domain'};
+    my $cnum   = $env{'course.'.$env{'request.course.id'}.'.num'};
+
+    if ($button eq 'Save & Next') {
+	my $ctr = 0;
+	while ($ctr < $ngrade) {
+	    my ($uname,$udom) = split(/:/,$env{'form.unamedom'.$ctr});
+	    my ($errorflag,$pts,$wgt) = &saveHandGrade($request,$symb,$uname,$udom,$ctr);
+	    if ($errorflag eq 'no_score') {
+		$ctr++;
+		next;
+	    }
+	    if ($errorflag eq 'not_allowed') {
+		$request->print("<span class=\"LC_warning\">Not allowed to modify grades for $uname:$udom</span>");
+		$ctr++;
+		next;
+	    }
+	    my $includemsg = $env{'form.includemsg'.$ctr};
+	    my ($subject,$message,$msgstatus) = ('','','');
+	    my $restitle = &Apache::lonnet::gettitle($symb);
+            my ($feedurl,$showsymb) =
+		&get_feedurl_and_symb($symb,$uname,$udom);
+	    my $messagetail;
+	    if ($includemsg =~ /savemsg|newmsg\Q$ctr\E/) {
+		$subject = $env{'form.msgsub'} if ($includemsg =~ /msgsub/);
+		unless ($subject=~/\w/) { $subject=&mt('Grading Feedback'); }
+		$subject.=' ['.$restitle.']';
+		my (@msgnum) = split(/,/,$includemsg);
+		foreach (@msgnum) {
+		    $message.=$env{'form.'.$_} if ($_ =~ /savemsg|newmsg/ && $_ ne '');
+		}
+		$message =&Apache::lonfeedback::clear_out_html($message);
+		if ($env{'form.withgrades'.$ctr}) {
+		    $message.="\n\nPoint".($pts > 1 ? 's':'').' awarded = '.$pts.' out of '.$wgt;
+		    $messagetail = " for <a href=\"".
+		                   $feedurl."?symb=$showsymb\">$env{'form.probTitle'}</a>";
+		}
+		$msgstatus = 
+                    &Apache::lonmsg::user_normal_msg($uname,$udom,$subject,
+						     $message.$messagetail,
+                                                     undef,$feedurl,undef,
+                                                     undef,undef,$showsymb,
+                                                     $restitle);
+		$request->print('<br />'.&mt('Sending message to [_1]:[_2]',$uname,$udom).': '.
+				$msgstatus);
+	    }
+	    if ($env{'form.collaborator'.$ctr}) {
+		my @collabstrs=&Apache::loncommon::get_env_multiple("form.collaborator$ctr");
+		foreach my $collabstr (@collabstrs) {
+		    my ($part,@collaborators) = split(/:/,$collabstr);
+		    foreach my $collaborator (@collaborators) {
+			my ($errorflag,$pts,$wgt) = 
+			    &saveHandGrade($request,$symb,$collaborator,$udom,$ctr,
+					   $env{'form.unamedom'.$ctr},$part);
+			if ($errorflag eq 'not_allowed') {
+			    $request->print("<span class=\"LC_error\">".&mt('Not allowed to modify grades for [_1]',"$collaborator:$udom")."</span>");
+			    next;
+			} elsif ($message ne '') {
+			    my ($baseurl,$showsymb) = 
+				&get_feedurl_and_symb($symb,$collaborator,
+						      $udom);
+			    if ($env{'form.withgrades'.$ctr}) {
+				$messagetail = " for <a href=\"".
+                                    $baseurl."?symb=$showsymb\">$env{'form.probTitle'}</a>";
+			    }
+			    $msgstatus = 
+				&Apache::lonmsg::user_normal_msg($collaborator,$udom,$subject,$message.$messagetail,undef,$baseurl,undef,undef,undef,$showsymb,$restitle);
+			}
+		    }
+		}
+	    }
+	    $ctr++;
+	}
+    }
+
+    if ($env{'form.handgrade'} eq 'yes') {
+	# Keywords sorted in alphabatical order
+	my $loginuser = $env{'user.name'}.':'.$env{'user.domain'};
+	my %keyhash = ();
+	$env{'form.keywords'}           =~ s/,\s{0,}|\s+/ /g;
+	$env{'form.keywords'}           =~ s/^\s+|\s+$//;
+	my (@keywords) = sort(split(/\s+/,$env{'form.keywords'}));
+	$env{'form.keywords'} = join(' ',@keywords);
+	$keyhash{$symb.'_keywords'}     = $env{'form.keywords'};
+	$keyhash{$symb.'_subject'}      = $env{'form.msgsub'};
+	$keyhash{$loginuser.'_kwclr'}   = $env{'form.kwclr'};
+	$keyhash{$loginuser.'_kwsize'}  = $env{'form.kwsize'};
+	$keyhash{$loginuser.'_kwstyle'} = $env{'form.kwstyle'};
+
+	# message center - Order of message gets changed. Blank line is eliminated.
+	# New messages are saved in env for the next student.
+	# All messages are saved in nohist_handgrade.db
+	my ($ctr,$idx) = (1,1);
+	while ($ctr <= $env{'form.savemsgN'}) {
+	    if ($env{'form.savemsg'.$ctr} ne '') {
+		$keyhash{$symb.'_savemsg'.$idx} = $env{'form.savemsg'.$ctr};
+		$idx++;
+	    }
+	    $ctr++;
+	}
+	$ctr = 0;
+	while ($ctr < $ngrade) {
+	    if ($env{'form.newmsg'.$ctr} ne '') {
+		$keyhash{$symb.'_savemsg'.$idx} = $env{'form.newmsg'.$ctr};
+		$env{'form.savemsg'.$idx} = $env{'form.newmsg'.$ctr};
+		$idx++;
+	    }
+	    $ctr++;
+	}
+	$env{'form.savemsgN'} = --$idx;
+	$keyhash{$symb.'_savemsgN'} = $env{'form.savemsgN'};
+	my $putresult = &Apache::lonnet::put
+	    ('nohist_handgrade',\%keyhash,$cdom,$cnum);
+    }
+    # Called by Save & Refresh from Highlight Attribute Window
+    my (undef,undef,$fullname) = &getclasslist($env{'form.section'},'1');
+    if ($env{'form.refresh'} eq 'on') {
+	my ($ctr,$total) = (0,0);
+	while ($ctr < $ngrade) {
+	    $total++ if  $env{'form.unamedom'.$ctr} ne '';
+	    $ctr++;
+	}
+	$env{'form.NTSTU'}=$ngrade;
+	$ctr = 0;
+	while ($ctr < $total) {
+	    my $processUser = $env{'form.unamedom'.$ctr};
+	    ($env{'form.student'},$env{'form.userdom'}) = split(/:/,$processUser);
+	    $env{'form.fullname'} = $$fullname{$processUser};
+	    &submission($request,$ctr,$total-1);
+	    $ctr++;
+	}
+	return '';
+    }
+
+# Go directly to grade student - from submission or link from chart page
+    if ($button eq 'Grade Student') {
+	(undef,undef,$env{'form.handgrade'},undef,undef) = &showResourceInfo($symb);
+	my $processUser = $env{'form.unamedom'.$env{'form.studentNo'}};
+	($env{'form.student'},$env{'form.userdom'}) = split(/:/,$processUser);
+	$env{'form.fullname'} = $$fullname{$processUser};
+	&submission($request,0,0);
+	return '';
+    }
+
+    # Get the next/previous one or group of students
+    my $firststu = $env{'form.unamedom0'};
+    my $laststu = $env{'form.unamedom'.($ngrade-1)};
+    my $ctr = 2;
+    while ($laststu eq '') {
+	$laststu  = $env{'form.unamedom'.($ngrade-$ctr)};
+	$ctr++;
+	$laststu = $firststu if ($ctr > $ngrade);
+    }
+
+    my (@parsedlist,@nextlist);
+    my ($nextflg) = 0;
+    foreach (sort 
+	     {
+		 if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
+		     return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
+		 }
+		 return $a cmp $b;
+	     } (keys(%$fullname))) {
+	if ($nextflg == 1 && $button =~ /Next$/) {
+	    push @parsedlist,$_;
+	}
+	$nextflg = 1 if ($_ eq $laststu);
+	if ($button eq 'Previous') {
+	    last if ($_ eq $firststu);
+	    push @parsedlist,$_;
+	}
+    }
+    $ctr = 0;
+    @parsedlist = reverse @parsedlist if ($button eq 'Previous');
+    my ($partlist) = &response_type($symb);
+    foreach my $student (@parsedlist) {
+	my $submitonly=$env{'form.submitonly'};
+	my ($uname,$udom) = split(/:/,$student);
+	
+	if ($submitonly eq 'queued') {
+	    my %queue_status = 
+		&Apache::bridgetask::get_student_status($symb,$cdom,$cnum,
+							$udom,$uname);
+	    next if (!defined($queue_status{'gradingqueue'}));
+	}
+
+	if ($submitonly =~ /^(yes|graded|incorrect)$/) {
+#	    my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},$udom,$uname);
+	    my %status=&student_gradeStatus($symb,$udom,$uname,$partlist);
+	    my $submitted = 0;
+	    my $ungraded = 0;
+	    my $incorrect = 0;
+	    foreach (keys(%status)) {
+		$submitted = 1 if ($status{$_} ne 'nothing');
+		$ungraded = 1 if ($status{$_} =~ /^ungraded/);
+		$incorrect = 1 if ($status{$_} =~ /^incorrect/);
+		my ($foo,$partid,$foo1) = split(/\./,$_);
+		if ($status{'resource.'.$partid.'.submitted_by'} ne '') {
+		    $submitted = 0;
+		}
+	    }
+	    next if (!$submitted && ($submitonly eq 'yes' ||
+				     $submitonly eq 'incorrect' ||
+				     $submitonly eq 'graded'));
+	    next if (!$ungraded && ($submitonly eq 'graded'));
+	    next if (!$incorrect && $submitonly eq 'incorrect');
+	}
+	push @nextlist,$student if ($ctr < $ntstu);
+	last if ($ctr == $ntstu);
+	$ctr++;
+    }
+
+    $ctr = 0;
+    my $total = scalar(@nextlist)-1;
+
+    foreach (sort @nextlist) {
+	my ($uname,$udom,$submitter) = split(/:/);
+	$env{'form.student'}  = $uname;
+	$env{'form.userdom'}  = $udom;
+	$env{'form.fullname'} = $$fullname{$_};
+	&submission($request,$ctr,$total);
+	$ctr++;
+    }
+    if ($total < 0) {
+	my $the_end = '<h3><span class="LC_info">LON-CAPA User Message</span></h3><br />'."\n";
+	$the_end.='<b>Message: </b> No more students for this section or class.<br /><br />'."\n";
+	$the_end.='Click on the button below to return to the grading menu.<br /><br />'."\n";
+	$the_end.=&show_grading_menu_form($symb);
+	$request->print($the_end);
+    }
+    return '';
+}
+
+#---- Save the score and award for each student, if changed
+sub saveHandGrade {
+    my ($request,$symb,$stuname,$domain,$newflg,$submitter,$part) = @_;
+    my @version_parts;
+    my $usec = &Apache::lonnet::getsection($domain,$stuname,
+					   $env{'request.course.id'});
+    if (!&canmodify($usec)) { return('not_allowed'); }
+    my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},$domain,$stuname);
+    my @parts_graded;
+    my %newrecord  = ();
+    my ($pts,$wgt) = ('','');
+    my %aggregate = ();
+    my $aggregateflag = 0;
+    my @parts = split(/:/,$env{'form.partlist'.$newflg});
+    foreach my $new_part (@parts) {
+	#collaborator ($submi may vary for different parts
+	if ($submitter && $new_part ne $part) { next; }
+	my $dropMenu = $env{'form.GD_SEL'.$newflg.'_'.$new_part};
+	if ($dropMenu eq 'excused') {
+	    if ($record{'resource.'.$new_part.'.solved'} ne 'excused') {
+		$newrecord{'resource.'.$new_part.'.solved'} = 'excused';
+		if (exists($record{'resource.'.$new_part.'.awarded'})) {
+		    $newrecord{'resource.'.$new_part.'.awarded'} = '';
+		}
+	        $newrecord{'resource.'.$new_part.'.regrader'}="$env{'user.name'}:$env{'user.domain'}";
+	    }
+	} elsif ($dropMenu eq 'reset status'
+		 && exists($record{'resource.'.$new_part.'.solved'})) { #don't bother if no old records -> no attempts
+	    foreach my $key (keys (%record)) {
+		if ($key=~/^resource\.\Q$new_part\E\./) { $newrecord{$key} = ''; }
+	    }
+	    $newrecord{'resource.'.$new_part.'.regrader'}=
+		"$env{'user.name'}:$env{'user.domain'}";
+            my $totaltries = $record{'resource.'.$part.'.tries'};
+
+            my %last_resets = &get_last_resets($symb,$env{'request.course.id'},
+					       [$new_part]);
+            my $aggtries =$totaltries;
+            if ($last_resets{$new_part}) {
+                $aggtries = &get_num_tries(\%record,$last_resets{$new_part},
+					   $new_part);
+            }
+
+            my $solvedstatus = $record{'resource.'.$new_part.'.solved'};
+            if ($aggtries > 0) {
+                &decrement_aggs($symb,$new_part,\%aggregate,$aggtries,$totaltries,$solvedstatus);
+                $aggregateflag = 1;
+            }
+	} elsif ($dropMenu eq '') {
+	    $pts = ($env{'form.GD_BOX'.$newflg.'_'.$new_part} ne '' ? 
+		    $env{'form.GD_BOX'.$newflg.'_'.$new_part} : 
+		    $env{'form.RADVAL'.$newflg.'_'.$new_part});
+	    if ($pts eq '' && $env{'form.GD_SEL'.$newflg.'_'.$new_part} eq '') {
+		next;
+	    }
+	    $wgt = $env{'form.WGT'.$newflg.'_'.$new_part} eq '' ? 1 : 
+		$env{'form.WGT'.$newflg.'_'.$new_part};
+	    my $partial= $pts/$wgt;
+	    if ($partial eq $record{'resource.'.$new_part.'.awarded'}) {
+		#do not update score for part if not changed.
+                &handback_files($request,$symb,$stuname,$domain,$newflg,$new_part,\%newrecord);
+		next;
+	    } else {
+	        push @parts_graded, $new_part;
+	    }
+	    if ($record{'resource.'.$new_part.'.awarded'} ne $partial) {
+		$newrecord{'resource.'.$new_part.'.awarded'}  = $partial;
+	    }
+	    my $reckey = 'resource.'.$new_part.'.solved';
+	    if ($partial == 0) {
+		if ($record{$reckey} ne 'incorrect_by_override') {
+		    $newrecord{$reckey} = 'incorrect_by_override';
+		}
+	    } else {
+		if ($record{$reckey} ne 'correct_by_override') {
+		    $newrecord{$reckey} = 'correct_by_override';
+		}
+	    }	    
+	    if ($submitter && 
+		($record{'resource.'.$new_part.'.submitted_by'} ne $submitter)) {
+		$newrecord{'resource.'.$new_part.'.submitted_by'} = $submitter;
+	    }
+	    $newrecord{'resource.'.$new_part.'.regrader'}=
+		"$env{'user.name'}:$env{'user.domain'}";
+	}
+	# unless problem has been graded, set flag to version the submitted files
+	unless ($record{'resource.'.$new_part.'.solved'} =~ /^correct_/  || 
+	        $record{'resource.'.$new_part.'.solved'} eq 'incorrect_by_override' ||
+	        $dropMenu eq 'reset status')
+	   {
+	    push (@version_parts,$new_part);
+	}
+    }
+    my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+    my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+
+    if (%newrecord) {
+        if (@version_parts) {
+            my @changed_keys = &version_portfiles(\%record, \@parts_graded, 
+                                $env{'request.course.id'}, $symb, $domain, $stuname, \@version_parts);
+	    @newrecord{@changed_keys} = @record{@changed_keys};
+	    foreach my $new_part (@version_parts) {
+		&handback_files($request,$symb,$stuname,$domain,$newflg,
+				$new_part,\%newrecord);
+	    }
+        }
+	&Apache::lonnet::cstore(\%newrecord,$symb,
+				$env{'request.course.id'},$domain,$stuname);
+	&check_and_remove_from_queue(\@parts,\%record,\%newrecord,$symb,
+				     $cdom,$cnum,$domain,$stuname);
+    }
+    if ($aggregateflag) {
+        &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
+			      $cdom,$cnum);
+    }
+    return ('',$pts,$wgt);
+}
+
+sub check_and_remove_from_queue {
+    my ($parts,$record,$newrecord,$symb,$cdom,$cnum,$domain,$stuname) = @_;
+    my @ungraded_parts;
+    foreach my $part (@{$parts}) {
+	if (    $record->{   'resource.'.$part.'.awarded'} eq ''
+	     && $record->{   'resource.'.$part.'.solved' } ne 'excused'
+	     && $newrecord->{'resource.'.$part.'.awarded'} eq ''
+	     && $newrecord->{'resource.'.$part.'.solved' } ne 'excused'
+		) {
+	    push(@ungraded_parts, $part);
+	}
+    }
+    if ( !@ungraded_parts ) {
+	&Apache::bridgetask::remove_from_queue('gradingqueue',$symb,$cdom,
+					       $cnum,$domain,$stuname);
+    }
+}
+
+sub handback_files {
+    my ($request,$symb,$stuname,$domain,$newflg,$new_part,$newrecord) = @_;
+    my $portfolio_root = &propath($domain,$stuname).'/userfiles/portfolio';
+    my ($partlist,$handgrade,$responseType) = &response_type($symb);
+
+    my @part_response_id = &flatten_responseType($responseType);
+    foreach my $part_response_id (@part_response_id) {
+    	my ($part_id,$resp_id) = @{ $part_response_id };
+	my $part_resp = join('_',@{ $part_response_id });
+            if (($env{'form.'.$newflg.'_'.$part_resp.'_returndoc1'}) && ($new_part == $part_id)) {
+                # if multiple files are uploaded names will be 'returndoc2','returndoc3'
+                my $file_counter = 1;
+		my $file_msg;
+                while ($env{'form.'.$newflg.'_'.$part_resp.'_returndoc'.$file_counter}) {
+                    my $fname=$env{'form.'.$newflg.'_'.$part_resp.'_returndoc'.$file_counter.'.filename'};
+                    my ($directory,$answer_file) = 
+                        ($env{'form.'.$newflg.'_'.$part_resp.'_origdoc'.$file_counter} =~ /^(.*?)([^\/]*)$/);
+                    my ($answer_name,$answer_ver,$answer_ext) =
+		        &file_name_version_ext($answer_file);
+		    my ($portfolio_path) = ($directory =~ /^.+$stuname\/portfolio(.*)/);
+		    my @dir_list = &Apache::lonnet::dirlist($portfolio_path,$domain,$stuname,$portfolio_root);
+		    my $version = &get_next_version($answer_name, $answer_ext, \@dir_list);
+                    # fix file name
+                    my ($save_file_name) = (($directory.$answer_name.".$version.".$answer_ext) =~ /^.+\/${stuname}\/(.*)/);
+                    my $result=&Apache::lonnet::finishuserfileupload($stuname,$domain,
+            	                                $newflg.'_'.$part_resp.'_returndoc'.$file_counter,
+            	                                $save_file_name);
+                    if ($result !~ m|^/uploaded/|) {
+                        $request->print('<span class="LC_error">An error occurred ('.$result.
+                        ') while trying to upload '.$newflg.'_'.$part_resp.'_returndoc'.$file_counter.'</span><br />');
+                    } else {
+                        # mark the file as read only
+                        my @files = ($save_file_name);
+                        my @what = ($symb,$env{'request.course.id'},'handback');
+                        &Apache::lonnet::mark_as_readonly($domain,$stuname,\@files,\@what);
+			if (exists($$newrecord{"resource.$new_part.$resp_id.handback"})) {
+			    $$newrecord{"resource.$new_part.$resp_id.handback"}.=',';
+			}
+                        $$newrecord{"resource.$new_part.$resp_id.handback"} .= $save_file_name;
+			$file_msg.= "\n".'<br /><span class="LC_filename"><a href="/uploaded/'."$domain/$stuname/".$save_file_name.'">'.$save_file_name."</a></span><br />";
+
+                    }
+                    $request->print("<br />".$fname." will be the uploaded file name");
+                    $request->print(" ".$env{'form.'.$newflg.'_'.$part_resp.'_origdoc'.$file_counter});
+                    $file_counter++;
+                }
+		my $subject = "File Handed Back by Instructor ";
+		my $message = "A file has been returned that was originally submitted in reponse to: <br />";
+		$message .= "<strong>".&Apache::lonnet::gettitle($symb)."</strong><br />";
+		$message .= ' The returned file(s) are named: '. $file_msg;
+		$message .= " and can be found in your portfolio space.";
+		my ($feedurl,$showsymb) = 
+		    &get_feedurl_and_symb($symb,$domain,$stuname);
+                my $restitle = &Apache::lonnet::gettitle($symb);
+		my $msgstatus = 
+                   &Apache::lonmsg::user_normal_msg($stuname,$domain,$subject.
+			 ' (File Returned) ['.$restitle.']',$message,undef,
+                         $feedurl,undef,undef,undef,$showsymb,$restitle);
+            }
+        }
+    return;
+}
+
+sub get_feedurl_and_symb {
+    my ($symb,$uname,$udom) = @_;
+    my (undef,undef,$url) = &Apache::lonnet::decode_symb($symb);
+    $url = &Apache::lonnet::clutter($url);
+    my $encrypturl=&Apache::lonnet::EXT('resource.0.encrypturl',
+					$symb,$udom,$uname);
+    if ($encrypturl =~ /^yes$/i) {
+	&Apache::lonenc::encrypted(\$url,1);
+	&Apache::lonenc::encrypted(\$symb,1);
+    }
+    return ($url,$symb);
+}
+
+sub get_submitted_files {
+    my ($udom,$uname,$partid,$respid,$record) = @_;
+    my @files;
+    if ($$record{"resource.$partid.$respid.portfiles"}) {
+        my $file_url = '/uploaded/'.$udom.'/'.$uname.'/portfolio';
+        foreach my $file (split(',',$$record{"resource.$partid.$respid.portfiles"})) {
+    	    push(@files,$file_url.$file);
+        }
+    }
+    if ($$record{"resource.$partid.$respid.uploadedurl"}) {
+        push(@files,$$record{"resource.$partid.$respid.uploadedurl"});
+    }
+    return (\@files);
+}
+
+# ----------- Provides number of tries since last reset.
+sub get_num_tries {
+    my ($record,$last_reset,$part) = @_;
+    my $timestamp = '';
+    my $num_tries = 0;
+    if ($$record{'version'}) {
+        for (my $version=$$record{'version'};$version>=1;$version--) {
+            if (exists($$record{$version.':resource.'.$part.'.solved'})) {
+                $timestamp = $$record{$version.':timestamp'};
+                if ($timestamp > $last_reset) {
+                    $num_tries ++;
+                } else {
+                    last;
+                }
+            }
+        }
+    }
+    return $num_tries;
+}
+
+# ----------- Determine decrements required in aggregate totals 
+sub decrement_aggs {
+    my ($symb,$part,$aggregate,$aggtries,$totaltries,$solvedstatus) = @_;
+    my %decrement = (
+                        attempts => 0,
+                        users => 0,
+                        correct => 0
+                    );
+    $decrement{'attempts'} = $aggtries;
+    if ($solvedstatus =~ /^correct/) {
+        $decrement{'correct'} = 1;
+    }
+    if ($aggtries == $totaltries) {
+        $decrement{'users'} = 1;
+    }
+    foreach my $type (keys (%decrement)) {
+        $$aggregate{$symb."\0".$part."\0".$type} = -$decrement{$type};
+    }
+    return;
+}
+
+# ----------- Determine timestamps for last reset of aggregate totals for parts  
+sub get_last_resets {
+    my ($symb,$courseid,$partids) =@_;
+    my %last_resets;
+    my $cdom = $env{'course.'.$courseid.'.domain'};
+    my $cname = $env{'course.'.$courseid.'.num'};
+    my @keys;
+    foreach my $part (@{$partids}) {
+	push(@keys,"$symb\0$part\0resettime");
+    }
+    my %results=&Apache::lonnet::get('nohist_resourcetracker',\@keys,
+				     $cdom,$cname);
+    foreach my $part (@{$partids}) {
+	$last_resets{$part}=$results{"$symb\0$part\0resettime"};
+    }
+    return %last_resets;
+}
+
+# ----------- Handles creating versions for portfolio files as answers
+sub version_portfiles {
+    my ($record, $parts_graded, $courseid, $symb, $domain, $stu_name, $v_flag) = @_;
+    my $version_parts = join('|',@$v_flag);
+    my @returned_keys;
+    my $parts = join('|', @$parts_graded);
+    my $portfolio_root = &propath($domain,$stu_name).
+	'/userfiles/portfolio';
+    foreach my $key (keys(%$record)) {
+        my $new_portfiles;
+        if ($key =~ /^resource\.($version_parts)\./ && $key =~ /\.portfiles$/ ) {
+            my @versioned_portfiles;
+            my @portfiles = split(/\s*,\s*/,$$record{$key});
+            foreach my $file (@portfiles) {
+                &Apache::lonnet::unmark_as_readonly($domain,$stu_name,[$symb,$env{'request.course.id'}],$file);
+                my ($directory,$answer_file) =($file =~ /^(.*?)([^\/]*)$/);
+		my ($answer_name,$answer_ver,$answer_ext) =
+		    &file_name_version_ext($answer_file);
+                my @dir_list = &Apache::lonnet::dirlist($directory,$domain,$stu_name,$portfolio_root);
+                my $version = &get_next_version($answer_name, $answer_ext, \@dir_list);
+                my $new_answer = &version_selected_portfile($domain, $stu_name, $directory, $answer_file, $version);
+                if ($new_answer ne 'problem getting file') {
+                    push(@versioned_portfiles, $directory.$new_answer);
+                    &Apache::lonnet::mark_as_readonly($domain,$stu_name,
+                        [$directory.$new_answer],
+                        [$symb,$env{'request.course.id'},'graded']);
+                }
+            }
+            $$record{$key} = join(',',@versioned_portfiles);
+            push(@returned_keys,$key);
+        }
+    } 
+    return (@returned_keys);   
+}
+
+sub get_next_version {
+    my ($answer_name, $answer_ext, $dir_list) = @_;
+    my $version;
+    foreach my $row (@$dir_list) {
+        my ($file) = split(/\&/,$row,2);
+        my ($file_name,$file_version,$file_ext) =
+	    &file_name_version_ext($file);
+        if (($file_name eq $answer_name) && 
+	    ($file_ext eq $answer_ext)) {
+                # gets here if filename and extension match, regardless of version
+                if ($file_version ne '') {
+                # a versioned file is found  so save it for later
+                if ($file_version > $version) {
+		    $version = $file_version;
+	        }
+            }
+        }
+    } 
+    $version ++;
+    return($version);
+}
+
+sub version_selected_portfile {
+    my ($domain,$stu_name,$directory,$file_name,$version) = @_;
+    my ($answer_name,$answer_ver,$answer_ext) =
+        &file_name_version_ext($file_name);
+    my $new_answer;
+    $env{'form.copy'} = &Apache::lonnet::getfile("/uploaded/$domain/$stu_name/portfolio$directory$file_name");
+    if($env{'form.copy'} eq '-1') {
+        $new_answer = 'problem getting file';
+    } else {
+        $new_answer = $answer_name.'.'.$version.'.'.$answer_ext;
+        my $copy_result = &Apache::lonnet::finishuserfileupload(
+                            $stu_name,$domain,'copy',
+		        '/portfolio'.$directory.$new_answer);
+    }    
+    return ($new_answer);
+}
+
+sub file_name_version_ext {
+    my ($file)=@_;
+    my @file_parts = split(/\./, $file);
+    my ($name,$version,$ext);
+    if (@file_parts > 1) {
+	$ext=pop(@file_parts);
+	if (@file_parts > 1 && $file_parts[-1] =~ /^\d+$/) {
+	    $version=pop(@file_parts);
+	}
+	$name=join('.',@file_parts);
+    } else {
+	$name=join('.',@file_parts);
+    }
+    return($name,$version,$ext);
+}
+
+#--------------------------------------------------------------------------------------
+#
+#-------------------------- Next few routines handles grading by section or whole class
+#
+#--- Javascript to handle grading by section or whole class
+sub viewgrades_js {
+    my ($request) = shift;
+
+    $request->print(<<VIEWJAVASCRIPT);
+<script type="text/javascript" language="javascript">
+   function writePoint(partid,weight,point) {
+	var radioButton = document.classgrade["RADVAL_"+partid];
+	var textbox = document.classgrade["TEXTVAL_"+partid];
+	if (point == "textval") {
+	    point = document.classgrade["TEXTVAL_"+partid].value;
+	    if (isNaN(point) || parseFloat(point) < 0) {
+		alert("A number equal or greater than 0 is expected. Entered value = "+parseFloat(point));
+		var resetbox = false;
+		for (var i=0; i<radioButton.length; i++) {
+		    if (radioButton[i].checked) {
+			textbox.value = i;
+			resetbox = true;
+		    }
+		}
+		if (!resetbox) {
+		    textbox.value = "";
+		}
+		return;
+	    }
+	    if (parseFloat(point) > parseFloat(weight)) {
+		var resp = confirm("You entered a value ("+parseFloat(point)+
+				   ") greater than the weight for the part. Accept?");
+		if (resp == false) {
+		    textbox.value = "";
+		    return;
+		}
+	    }
+	    for (var i=0; i<radioButton.length; i++) {
+		radioButton[i].checked=false;
+		if (parseFloat(point) == i) {
+		    radioButton[i].checked=true;
+		}
+	    }
+
+	} else {
+	    textbox.value = parseFloat(point);
+	}
+	for (i=0;i<document.classgrade.total.value;i++) {
+	    var user = document.classgrade["ctr"+i].value;
+	    user = user.replace(new RegExp(':', 'g'),"_");
+	    var scorename = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
+	    var saveval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
+	    var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
+	    if (saveval != "correct") {
+		scorename.value = point;
+		if (selname[0].selected != true) {
+		    selname[0].selected = true;
+		}
+	    }
+	}
+	document.classgrade["SELVAL_"+partid][0].selected = true;
+    }
+
+    function writeRadText(partid,weight) {
+	var selval   = document.classgrade["SELVAL_"+partid];
+	var radioButton = document.classgrade["RADVAL_"+partid];
+        var override = document.classgrade["FORCE_"+partid].checked;
+	var textbox = document.classgrade["TEXTVAL_"+partid];
+	if (selval[1].selected || selval[2].selected) {
+	    for (var i=0; i<radioButton.length; i++) {
+		radioButton[i].checked=false;
+
+	    }
+	    textbox.value = "";
+
+	    for (i=0;i<document.classgrade.total.value;i++) {
+		var user = document.classgrade["ctr"+i].value;
+		user = user.replace(new RegExp(':', 'g'),"_");
+		var scorename = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
+		var saveval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
+		var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
+		if ((saveval != "correct") || override) {
+		    scorename.value = "";
+		    if (selval[1].selected) {
+			selname[1].selected = true;
+		    } else {
+			selname[2].selected = true;
+			if (Number(document.classgrade["GD_"+user+"_"+partid+"_tries"].value)) 
+			{document.classgrade["GD_"+user+"_"+partid+"_tries"].value = '0';}
+		    }
+		}
+	    }
+	} else {
+	    for (i=0;i<document.classgrade.total.value;i++) {
+		var user = document.classgrade["ctr"+i].value;
+		user = user.replace(new RegExp(':', 'g'),"_");
+		var scorename = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
+		var saveval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
+		var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
+		if ((saveval != "correct") || override) {
+		    scorename.value = document.classgrade["GD_"+user+"_"+partid+"_awarded_s"].value;
+		    selname[0].selected = true;
+		}
+	    }
+	}	    
+    }
+
+    function changeSelect(partid,user) {
+	var selval = document.classgrade["GD_"+user+'_'+partid+"_solved"];
+	var textbox = document.classgrade["GD_"+user+'_'+partid+"_awarded"];
+	var point  = textbox.value;
+	var weight = document.classgrade["weight_"+partid].value;
+
+	if (isNaN(point) || parseFloat(point) < 0) {
+	    alert("A number equal or greater than 0 is expected. Entered value = "+parseFloat(point));
+	    textbox.value = "";
+	    return;
+	}
+	if (parseFloat(point) > parseFloat(weight)) {
+	    var resp = confirm("You entered a value ("+parseFloat(point)+
+			       ") greater than the weight of the part. Accept?");
+	    if (resp == false) {
+		textbox.value = "";
+		return;
+	    }
+	}
+	selval[0].selected = true;
+    }
+
+    function changeOneScore(partid,user) {
+	var selval = document.classgrade["GD_"+user+'_'+partid+"_solved"];
+	if (selval[1].selected || selval[2].selected) {
+	    document.classgrade["GD_"+user+'_'+partid+"_awarded"].value = "";
+	    if (selval[2].selected) {
+		document.classgrade["GD_"+user+'_'+partid+"_tries"].value = "0";
+	    }
+        }
+    }
+
+    function resetEntry(numpart) {
+	for (ctpart=0;ctpart<numpart;ctpart++) {
+	    var partid = document.classgrade["partid_"+ctpart].value;
+	    var radioButton = document.classgrade["RADVAL_"+partid];
+	    var textbox = document.classgrade["TEXTVAL_"+partid];
+	    var selval  = document.classgrade["SELVAL_"+partid];
+	    for (var i=0; i<radioButton.length; i++) {
+		radioButton[i].checked=false;
+
+	    }
+	    textbox.value = "";
+	    selval[0].selected = true;
+
+	    for (i=0;i<document.classgrade.total.value;i++) {
+		var user = document.classgrade["ctr"+i].value;
+		user = user.replace(new RegExp(':', 'g'),"_");
+		var resetscore = document.classgrade["GD_"+user+"_"+partid+"_awarded"];
+		resetscore.value = document.classgrade["GD_"+user+"_"+partid+"_awarded_s"].value;
+		var resettries = document.classgrade["GD_"+user+"_"+partid+"_tries"];
+		resettries.value = document.classgrade["GD_"+user+"_"+partid+"_tries_s"].value;
+		var saveselval   = document.classgrade["GD_"+user+"_"+partid+"_solved_s"].value;
+		var selname   = document.classgrade["GD_"+user+"_"+partid+"_solved"];
+		if (saveselval == "excused") {
+		    if (selname[1].selected == false) { selname[1].selected = true;}
+		} else {
+		    if (selname[0].selected == false) {selname[0].selected = true};
+		}
+	    }
+	}
+    }
+
+</script>
+VIEWJAVASCRIPT
+}
+
+#--- show scores for a section or whole class w/ option to change/update a score
+sub viewgrades {
+    my ($request) = shift;
+    &viewgrades_js($request);
+
+    my ($symb) = &get_symb($request);
+    #need to make sure we have the correct data for later EXT calls, 
+    #thus invalidate the cache
+    &Apache::lonnet::devalidatecourseresdata(
+                 $env{'course.'.$env{'request.course.id'}.'.num'},
+                 $env{'course.'.$env{'request.course.id'}.'.domain'});
+    &Apache::lonnet::clear_EXT_cache_status();
+
+    my $result='<h3><span class="LC_info">'.&mt('Manual Grading').'</span></h3>';
+    $result.='<h4><b>Current Resource: </b>'.$env{'form.probTitle'}.'</h4>'."\n";
+
+    #view individual student submission form - called using Javascript viewOneStudent
+    $result.=&jscriptNform($symb);
+
+    #beginning of class grading form
+    my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
+    $result.= '<form action="/adm/grades" method="post" name="classgrade">'."\n".
+	'<input type="hidden" name="symb"    value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
+	'<input type="hidden" name="command" value="editgrades" />'."\n".
+	&build_section_inputs().
+	'<input type="hidden" name="saveState" value="'.$env{'form.saveState'}.'" />'."\n".
+	'<input type="hidden" name="Status" value="'.$env{'stu_status'}.'" />'."\n".
+	'<input type="hidden" name="probTitle" value="'.$env{'form.probTitle'}.'" />'."\n";
+
+    my $sectionClass;
+    my $section_display = join (", ",&Apache::loncommon::get_env_multiple('form.section'));
+    if ($env{'form.section'} eq 'all') {
+	$sectionClass='Class </h3>';
+    } elsif ($env{'form.section'} eq 'none') {
+	$sectionClass=&mt('Students in no Section').'</h3>';
+    } else {
+	$sectionClass=&mt('Students in Section(s) [_1]',$section_display).'</h3>';
+    }
+    $result.='<h3>'.&mt('Assign Common Grade To [_1]',$sectionClass);
+    $result.= '<table border=0><tr><td bgcolor="#777777">'."\n".
+	'<table border=0><tr bgcolor="#ffffdd"><td>';
+    #radio buttons/text box for assigning points for a section or class.
+    #handles different parts of a problem
+    my ($partlist,$handgrade,$responseType) = &response_type($symb);
+    my %weight = ();
+    my $ctsparts = 0;
+    $result.='<table border="0">';
+    my %seen = ();
+    my @part_response_id = &flatten_responseType($responseType);
+    foreach my $part_response_id (@part_response_id) {
+    	my ($partid,$respid) = @{ $part_response_id };
+	my $part_resp = join('_',@{ $part_response_id });
+	next if $seen{$partid};
+	$seen{$partid}++;
+	my $handgrade=$$handgrade{$part_resp};
+	my $wgt = &Apache::lonnet::EXT('resource.'.$partid.'.weight',$symb);
+	$weight{$partid} = $wgt eq '' ? '1' : $wgt;
+
+	$result.='<input type="hidden" name="partid_'.
+	    $ctsparts.'" value="'.$partid.'" />'."\n";
+	$result.='<input type="hidden" name="weight_'.
+	    $partid.'" value="'.$weight{$partid}.'" />'."\n";
+	my $display_part=&get_display_part($partid,$symb);
+	$result.='<tr><td><b>Part:</b> '.$display_part.'&nbsp; &nbsp;<b>Point:</b> </td><td>';
+	$result.='<table border="0"><tr>';  
+	my $ctr = 0;
+	while ($ctr<=$weight{$partid}) { # display radio buttons in a nice table 10 across
+	    $result.= '<td><label><input type="radio" name="RADVAL_'.$partid.'" '.
+		'onclick="javascript:writePoint(\''.$partid.'\','.$weight{$partid}.
+		','.$ctr.')" />'.$ctr."</label></td>\n";
+	    $result.=(($ctr+1)%10 == 0 ? '</tr><tr>' : '');
+	    $ctr++;
+	}
+	$result.='</tr></table>';
+	$result.= '</td><td><b> or </b><input type="text" name="TEXTVAL_'.
+	    $partid.'" size="4" '.'onChange="javascript:writePoint(\''.
+		$partid.'\','.$weight{$partid}.',\'textval\')" /> /'.
+	    $weight{$partid}.' (problem weight)</td>'."\n";
+	$result.= '</td><td><select name="SELVAL_'.$partid.'"'.
+	    'onChange="javascript:writeRadText(\''.$partid.'\','.
+		$weight{$partid}.')"> '.
+	    '<option selected="selected"> </option>'.
+	    '<option>excused</option>'.
+	    '<option>reset status</option></select></td>'.
+            '<td><label><input type="checkbox" name="FORCE_'.$partid.'" /> Override "Correct"</label></td></tr>'."\n";
+	$ctsparts++;
+    }
+    $result.='</table>'.'</td></tr></table>'.'</td></tr></table>'."\n".
+	'<input type="hidden" name="totalparts" value="'.$ctsparts.'" />';
+    $result.='<input type="button" value="Revert to Default" '.
+	'onClick="javascript:resetEntry('.$ctsparts.');" target="_self" />';
+
+    #table listing all the students in a section/class
+    #header of table
+    $result.= '<h3>Assign Grade to Specific Students in '.$sectionClass;
+    $result.= '<table border=0><tr><td bgcolor="#777777">'."\n".
+	'<table border=0><tr bgcolor="#deffff"><td>&nbsp;<b>No.</b>&nbsp;</td>'.
+	'<td>'.&nameUserString('header')."</td>\n";
+    my (@parts) = sort(&getpartlist($symb));
+    my (undef,undef,$url)=&Apache::lonnet::decode_symb($symb);
+    my @partids = ();
+    foreach my $part (@parts) {
+	my $display=&Apache::lonnet::metadata($url,$part.'.display');
+	$display =~ s|^Number of Attempts|Tries<br />|; # makes the column narrower
+	if  (!$display) { $display = &Apache::lonnet::metadata($url,$part.'.name'); }
+	my ($partid) = &split_part_type($part);
+        push(@partids, $partid);
+	my $display_part=&get_display_part($partid,$symb);
+	if ($display =~ /^Partial Credit Factor/) {
+	    $result.='<td><b>Score Part:</b> '.$display_part.
+		' <br /><b>(weight = '.$weight{$partid}.')</b></td>'."\n";
+	    next;
+	} else {
+	    $display =~s/\[Part: \Q$partid\E\]/Part:<\/b> $display_part/;
+	}
+	$display =~ s|Problem Status|Grade Status<br />|;
+	$result.='<td><b>'.$display.'</td>'."\n";
+    }
+    $result.='</tr>';
+
+    my %last_resets = 
+	&get_last_resets($symb,$env{'request.course.id'},\@partids);
+
+    #get info for each student
+    #list all the students - with points and grade status
+    my (undef,undef,$fullname) = &getclasslist($env{'form.section'},'1');
+    my $ctr = 0;
+    foreach (sort 
+	     {
+		 if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
+		     return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
+		 }
+		 return $a cmp $b;
+	     } (keys(%$fullname))) {
+	$ctr++;
+	$result.=&viewstudentgrade($symb,$env{'request.course.id'},
+				   $_,$$fullname{$_},\@parts,\%weight,$ctr,\%last_resets);
+    }
+    $result.='</table></td></tr></table>';
+    $result.='<input type="hidden" name="total" value="'.$ctr.'" />'."\n";
+    $result.='<input type="button" value="Save" '.
+	'onClick="javascript:submit();" target="_self" /></form>'."\n";
+    if (scalar(%$fullname) eq 0) {
+	my $colspan=3+scalar(@parts);
+	my $section_display = join (", ",&Apache::loncommon::get_env_multiple('form.section'));
+        my $stu_status = join(' or ',&Apache::loncommon::get_env_multiple('form.Status'));
+	$result='<span class="LC_warning">'.
+	    &mt('There are no students in section(s) [_1] with enrollment status [_2] to modify or grade',
+	        $section_display, $stu_status).
+	    '</span>';
+    }
+    $result.=&show_grading_menu_form($symb);
+    return $result;
 }
 
+#--- call by previous routine to display each student
 sub viewstudentgrade {
-  my ($url,$symb,$courseid,$student,@parts) = @_;
-  my $result ='';
-  my $cellclr = '"#ffffdd"';
-  my ($stuname,$domain) = split(/:/,$student);
-
-  my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$stuname);
-
-  $result.="<tr><td bgcolor=$cellclr>$stuname</td><td bgcolor=$cellclr align=\"middle\">$domain</td>\n";
-  foreach my $part (@parts) {
-    my ($temp,$part,$type)=split(/_/,$part);
-    #print "resource.$part.$type = ".$record{"resource.$part.$type"}." <br />\n";
-    if ($type eq 'awarded') {
-      my $score=$record{"resource.$part.$type"};
-      $result.="<td bgcolor=$cellclr align=\"middle\"><input type=\"text\" name=\"GRADE.$student.$part.$type\" value=\"$score\" size=\"4\" /></td>\n";
-    } elsif ($type eq 'tries') {
-      my $score=$record{"resource.$part.$type"};
-      $result.="<td bgcolor=$cellclr align=\"middle\"><input type=\"text\" name=\"GRADE.$student.$part.$type\" value=\"$score\" size=\"4\" /></td>\n"
-    } elsif ($type eq 'solved') {
-      my $score=$record{"resource.$part.$type"};
-      $result.="<td bgcolor=$cellclr align=\"middle\"><select name=\"GRADE.$student.$part.$type\">\n";
-      if ($score =~ /^correct/) {
-	$result.="<option selected=\"on\">correct</option>\n<option>incorrect</option>\n<option>excused</option>\n<option>ungraded</option>\n<option>nothing</option>\n";
-      } elsif ($score =~ /^incorrect/) {
-	$result.="<option>correct</option>\n<option selected=\"on\">incorrect</option>\n<option>excused</option>\n<option>ungraded</option>\n<option>nothing</option>\n";
-      } elsif ($score eq '') {
-	$result.="<option>correct</option>\n<option>incorrect</option>\n<option>excused</option>\n<option>ungraded</option>\n<option selected=\"on\">nothing</option>\n";
-      } elsif ($score =~ /^excused/) {
-	$result.="<option>correct</option>\n<option>incorrect</option>\n<option selected=\"on\">excused</option>\n<option>ungraded</option>\n<option>nothing</option>\n";
-      } elsif ($score =~ /^ungraded/) {
-	$result.="<option>correct</option>\n<option>incorrect</option>\n<option>excused</option>\n<option selected=\"on\">ungraded</option>\n<option>nothing</option>\n";
+    my ($symb,$courseid,$student,$fullname,$parts,$weight,$ctr,$last_resets) = @_;
+    my ($uname,$udom) = split(/:/,$student);
+    my %record=&Apache::lonnet::restore($symb,$courseid,$udom,$uname);
+    my %aggregates = (); 
+    my $result='<tr bgcolor="#ffffdd"><td align="right">'.
+	'<input type="hidden" name="ctr'.($ctr-1).'" value="'.$student.'" />'.
+	"\n".$ctr.'&nbsp;</td><td>&nbsp;'.
+	'<a href="javascript:viewOneStudent(\''.$uname.'\',\''.$udom.
+	'\');" target="_self">'.$fullname.'</a> '.
+	'<span class="LC_internal_info">('.$uname.($env{'user.domain'} eq $udom ? '' : ':'.$udom).')</span></td>'."\n";
+    $student=~s/:/_/; # colon doen't work in javascript for names
+    foreach my $apart (@$parts) {
+	my ($part,$type) = &split_part_type($apart);
+	my $score=$record{"resource.$part.$type"};
+        $result.='<td align="center">';
+        my ($aggtries,$totaltries);
+        unless (exists($aggregates{$part})) {
+	    $totaltries = $record{'resource.'.$part.'.tries'};
+
+	    $aggtries = $totaltries;
+            if ($$last_resets{$part}) {  
+                $aggtries = &get_num_tries(\%record,$$last_resets{$part},
+					   $part);
+            }
+            $result.='<input type="hidden" name="'.
+                'GD_'.$student.'_'.$part.'_aggtries" value="'.$aggtries.'" />'."\n";
+            $result.='<input type="hidden" name="'.
+                'GD_'.$student.'_'.$part.'_totaltries" value="'.$totaltries.'" />'."\n";
+            $aggregates{$part} = 1;
+        }
+	if ($type eq 'awarded') {
+	    my $pts = $score eq '' ? '' : &compute_points($score,$$weight{$part});
+	    $result.='<input type="hidden" name="'.
+		'GD_'.$student.'_'.$part.'_awarded_s" value="'.$pts.'" />'."\n";
+	    $result.='<input type="text" name="'.
+		'GD_'.$student.'_'.$part.'_awarded" '.
+		'onChange="javascript:changeSelect(\''.$part.'\',\''.$student.
+		'\')" value="'.$pts.'" size="4" /></td>'."\n";
+	} elsif ($type eq 'solved') {
+	    my ($status,$foo)=split(/_/,$score,2);
+	    $status = 'nothing' if ($status eq '');
+	    $result.='<input type="hidden" name="'.'GD_'.$student.'_'.
+		$part.'_solved_s" value="'.$status.'" />'."\n";
+	    $result.='&nbsp;<select name="'.
+		'GD_'.$student.'_'.$part.'_solved" '.
+		'onChange="javascript:changeOneScore(\''.$part.'\',\''.$student.'\')" >'."\n";
+	    $result.= (($status eq 'excused') ? '<option> </option><option selected="selected">excused</option>' 
+		: '<option selected="selected"> </option><option>excused</option>')."\n";
+	    $result.='<option>reset status</option>';
+	    $result.="</select>&nbsp;</td>\n";
+	} else {
+	    $result.='<input type="hidden" name="'.
+		'GD_'.$student.'_'.$part.'_'.$type.'_s" value="'.$score.'" />'.
+		    "\n";
+	    $result.='<input type="text" name="'.
+		'GD_'.$student.'_'.$part.'_'.$type.'" '.
+		'value="'.$score.'" size="4" /></td>'."\n";
+	}
+    }
+    $result.='</tr>';
+    return $result;
+}
+
+#--- change scores for all the students in a section/class
+#    record does not get update if unchanged
+sub editgrades {
+    my ($request) = @_;
+
+    my $symb=&get_symb($request);
+    my $section_display = join (", ",&Apache::loncommon::get_env_multiple('form.section'));
+    my $title='<h3><span class="LC_info">'.&mt('Current Grade Status').'</span></h3>';
+    $title.='<h4>'.&mt('<b>Current Resource: </b>[_1]',$env{'form.probTitle'}).'</h4><br />'."\n";
+    $title.='<h4>'.&mt('<b>Section: </b>[_1]',$section_display).'</h4>'."\n";
+
+    my $result= '<table border="0"><tr><td bgcolor="#777777">'."\n";
+    $result.= '<table border="0"><tr bgcolor="#deffff">'.
+	'<td rowspan=2 valign="center">&nbsp;<b>No.</b>&nbsp;</td>'.
+	'<td rowspan=2 valign="center">'.&nameUserString('header')."</td>\n";
+
+    my %scoreptr = (
+		    'correct'  =>'correct_by_override',
+		    'incorrect'=>'incorrect_by_override',
+		    'excused'  =>'excused',
+		    'ungraded' =>'ungraded_attempted',
+		    'nothing'  => '',
+		    );
+    my ($classlist,undef,$fullname) = &getclasslist($env{'form.section'},'0');
+
+    my (@partid);
+    my %weight = ();
+    my %columns = ();
+    my ($i,$ctr,$count,$rec_update) = (0,0,0,0);
+
+    my (@parts) = sort(&getpartlist($symb));
+    my $header;
+    while ($ctr < $env{'form.totalparts'}) {
+	my $partid = $env{'form.partid_'.$ctr};
+	push @partid,$partid;
+	$weight{$partid} = $env{'form.weight_'.$partid};
+	$ctr++;
+    }
+    my (undef,undef,$url) = &Apache::lonnet::decode_symb($symb);
+    foreach my $partid (@partid) {
+	$header .= '<td align="center">&nbsp;<b>Old Score</b>&nbsp;</td>'.
+	    '<td align="center">&nbsp;<b>New Score</b>&nbsp;</td>';
+	$columns{$partid}=2;
+	foreach my $stores (@parts) {
+	    my ($part,$type) = &split_part_type($stores);
+	    if ($part !~ m/^\Q$partid\E/) { next;}
+	    if ($type eq 'awarded' || $type eq 'solved') { next; }
+	    my $display=&Apache::lonnet::metadata($url,$stores.'.display');
+	    $display =~ s/\[Part: (\w)+\]//;
+	    $display =~ s/Number of Attempts/Tries/;
+	    $header .= '<td align="center">&nbsp;<b>Old '.$display.'</b>&nbsp;</td>'.
+		'<td align="center">&nbsp;<b>New '.$display.'</b>&nbsp;</td>';
+	    $columns{$partid}+=2;
+	}
+    }
+    foreach my $partid (@partid) {
+	my $display_part=&get_display_part($partid,$symb);
+	$result .= '<td colspan="'.$columns{$partid}.
+	    '" align="center"><b>Part:</b> '.$display_part.
+	    ' (Weight = '.$weight{$partid}.')</td>';
+
+    }
+    $result .= '</tr><tr bgcolor="#deffff">';
+    $result .= $header;
+    $result .= '</tr>'."\n";
+    my $noupdate;
+    my ($updateCtr,$noupdateCtr) = (1,1);
+    for ($i=0; $i<$env{'form.total'}; $i++) {
+	my $line;
+	my $user = $env{'form.ctr'.$i};
+	my ($uname,$udom)=split(/:/,$user);
+	my %newrecord;
+	my $updateflag = 0;
+	$line .= '<td>'.&nameUserString(undef,$$fullname{$user},$uname,$udom).'</td>';
+	my $usec=$classlist->{"$uname:$udom"}[5];
+	if (!&canmodify($usec)) {
+	    my $numcols=scalar(@partid)*4+2;
+	    $noupdate.=$line."<td colspan=\"$numcols\"><span class=\"LC_warning\">Not allowed to modify student</span></td></tr>";
+	    next;
+	}
+        my %aggregate = ();
+        my $aggregateflag = 0;
+	$user=~s/:/_/; # colon doen't work in javascript for names
+	foreach (@partid) {
+	    my $old_aw    = $env{'form.GD_'.$user.'_'.$_.'_awarded_s'};
+	    my $old_part_pcr = $old_aw/($weight{$_} ne '0' ? $weight{$_}:1);
+	    my $old_part  = $old_aw eq '' ? '' : $old_part_pcr;
+	    my $old_score = $scoreptr{$env{'form.GD_'.$user.'_'.$_.'_solved_s'}};
+	    my $awarded   = $env{'form.GD_'.$user.'_'.$_.'_awarded'};
+	    my $pcr       = $awarded/($weight{$_} ne '0' ? $weight{$_} : 1);
+	    my $partial   = $awarded eq '' ? '' : $pcr;
+	    my $score;
+	    if ($partial eq '') {
+		$score = $scoreptr{$env{'form.GD_'.$user.'_'.$_.'_solved_s'}};
+	    } elsif ($partial > 0) {
+		$score = 'correct_by_override';
+	    } elsif ($partial == 0) {
+		$score = 'incorrect_by_override';
+	    }
+	    my $dropMenu = $env{'form.GD_'.$user.'_'.$_.'_solved'};
+	    $score = 'excused' if (($dropMenu eq 'excused') && ($score ne 'excused'));
+
+	    $newrecord{'resource.'.$_.'.regrader'}=
+		"$env{'user.name'}:$env{'user.domain'}";
+	    if ($dropMenu eq 'reset status' &&
+		$old_score ne '') { # ignore if no previous attempts => nothing to reset
+		$newrecord{'resource.'.$_.'.tries'} = '';
+		$newrecord{'resource.'.$_.'.solved'} = '';
+		$newrecord{'resource.'.$_.'.award'} = '';
+		$newrecord{'resource.'.$_.'.awarded'} = '';
+		$updateflag = 1;
+                if ($env{'form.GD_'.$user.'_'.$_.'_aggtries'} > 0) {
+                    my $aggtries = $env{'form.GD_'.$user.'_'.$_.'_aggtries'};
+                    my $totaltries = $env{'form.GD_'.$user.'_'.$_.'_totaltries'};
+                    my $solvedstatus = $env{'form.GD_'.$user.'_'.$_.'_solved_s'};
+                    &decrement_aggs($symb,$_,\%aggregate,$aggtries,$totaltries,$solvedstatus);
+                    $aggregateflag = 1;
+                }
+	    } elsif (!($old_part eq $partial && $old_score eq $score)) {
+		$updateflag = 1;
+		$newrecord{'resource.'.$_.'.awarded'}  = $partial if $partial ne '';
+		$newrecord{'resource.'.$_.'.solved'}   = $score;
+		$rec_update++;
+	    }
+
+	    $line .= '<td align="center">'.$old_aw.'&nbsp;</td>'.
+		'<td align="center">'.$awarded.
+		($score eq 'excused' ? $score : '').'&nbsp;</td>';
+
+
+	    my $partid=$_;
+	    foreach my $stores (@parts) {
+		my ($part,$type) = &split_part_type($stores);
+		if ($part !~ m/^\Q$partid\E/) { next;}
+		if ($type eq 'awarded' || $type eq 'solved') { next; }
+		my $old_aw    = $env{'form.GD_'.$user.'_'.$part.'_'.$type.'_s'};
+		my $awarded   = $env{'form.GD_'.$user.'_'.$part.'_'.$type};
+		if ($awarded ne '' && $awarded ne $old_aw) {
+		    $newrecord{'resource.'.$part.'.'.$type}= $awarded;
+		    $newrecord{'resource.'.$part.'.regrader'}="$env{'user.name'}:$env{'user.domain'}";
+		    $updateflag=1;
+		}
+		$line .= '<td align="center">'.$old_aw.'&nbsp;</td>'.
+		    '<td align="center">'.$awarded.'&nbsp;</td>';
+	    }
+	}
+	$line.='</tr>'."\n";
+
+	my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+	my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+
+	if ($updateflag) {
+	    $count++;
+	    &Apache::lonnet::cstore(\%newrecord,$symb,$env{'request.course.id'},
+				    $udom,$uname);
+
+	    if (&Apache::bridgetask::in_queue('gradingqueue',$symb,$cdom,
+					      $cnum,$udom,$uname)) {
+		# need to figure out if should be in queue.
+		my %record =  
+		    &Apache::lonnet::restore($symb,$env{'request.course.id'},
+					     $udom,$uname);
+		my $all_graded = 1;
+		my $none_graded = 1;
+		foreach my $part (@parts) {
+		    if ( $record{'resource.'.$part.'.awarded'} eq '' ) {
+			$all_graded = 0;
+		    } else {
+			$none_graded = 0;
+		    }
+		}
+
+		if ($all_graded || $none_graded) {
+		    &Apache::bridgetask::remove_from_queue('gradingqueue',
+							   $symb,$cdom,$cnum,
+							   $udom,$uname);
+		}
+	    }
+
+	    $result.='<tr bgcolor="#ffffde"><td align="right">&nbsp;'.$updateCtr.'&nbsp;</td>'.$line;
+	    $updateCtr++;
+	} else {
+	    $noupdate.='<tr bgcolor="#ffffde"><td align="right">&nbsp;'.$noupdateCtr.'&nbsp;</td>'.$line;
+	    $noupdateCtr++;
+	}
+        if ($aggregateflag) {
+            &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
+				  $cdom,$cnum);
+        }
+    }
+    if ($noupdate) {
+#	my $numcols=(scalar(@partid)*(scalar(@parts)-1)*2)+3;
+	my $numcols=scalar(@partid)*4+2;
+	$result .= '<tr bgcolor="#ffffff"><td align="center" colspan="'.$numcols.'">No Changes Occurred For the Students Below</td></tr><tr bgcolor="#ffffde">'.$noupdate;
+    }
+    $result .= '</table></td></tr></table>'."\n".
+	&show_grading_menu_form ($symb);
+    my $msg = '<br /><b>Number of records updated = '.$rec_update.
+	' for '.$count.' student'.($count <= 1 ? '' : 's').'.</b><br />'.
+	'<b>Total number of students = '.$env{'form.total'}.'</b><br />';
+    return $title.$msg.$result;
+}
+
+sub split_part_type {
+    my ($partstr) = @_;
+    my ($temp,@allparts)=split(/_/,$partstr);
+    my $type=pop(@allparts);
+    my $part=join('_',@allparts);
+    return ($part,$type);
+}
+
+#------------- end of section for handling grading by section/class ---------
+#
+#----------------------------------------------------------------------------
+
+
+#----------------------------------------------------------------------------
+#
+#-------------------------- Next few routines handles grading by csv upload
+#
+#--- Javascript to handle csv upload
+sub csvupload_javascript_reverse_associate {
+    my $error1=&mt('You need to specify the username or ID');
+    my $error2=&mt('You need to specify at least one grading field');
+  return(<<ENDPICK);
+  function verify(vf) {
+    var foundsomething=0;
+    var founduname=0;
+    var foundID=0;
+    for (i=0;i<=vf.nfields.value;i++) {
+      tw=eval('vf.f'+i+'.selectedIndex');
+      if (i==0 && tw!=0) { foundID=1; }
+      if (i==1 && tw!=0) { founduname=1; }
+      if (i!=0 && i!=1 && i!=2 && tw!=0) { foundsomething=1; }
+    }
+    if (founduname==0 && foundID==0) {
+	alert('$error1');
+	return;
+    }
+    if (foundsomething==0) {
+	alert('$error2');
+	return;
+    }
+    vf.submit();
+  }
+  function flip(vf,tf) {
+    var nw=eval('vf.f'+tf+'.selectedIndex');
+    var i;
+    for (i=0;i<=vf.nfields.value;i++) {
+      //can not pick the same destination field for both name and domain
+      if (((i ==0)||(i ==1)) && 
+          ((tf==0)||(tf==1)) && 
+          (i!=tf) &&
+          (eval('vf.f'+i+'.selectedIndex')==nw)) {
+        eval('vf.f'+i+'.selectedIndex=0;')
       }
-      $result.="</select></td>\n";
     }
   }
-  $result.='</tr>';
-  return $result;
+ENDPICK
 }
-#FIXME need to look at the meatdata <stores> spec on what type of data to accept and provide an
-#interface based on that, also do that to above function.
-sub setstudentgrade {
-  my ($url,$symb,$courseid,$student,@parts) = @_;
-
-  my $result ='';
-
-  my ($stuname,$domain) = split(/:/,$student);
-
-  my %record=&Apache::lonnet::restore($symb,$courseid,$domain,$stuname);
-
-  my %newrecord;
-
-  foreach my $part (@parts) {
-    my ($temp,$part,$type)=split(/_/,$part);
-    my $oldscore=$record{"resource.$part.$type"};
-    my $newscore=$ENV{"form.GRADE.$student.$part.$type"};
-    if ($type eq 'solved') {
-      my $update=0;
-      if ($newscore eq 'nothing' ) {
-	if ($oldscore ne '') {
-	  $update=1;
-	  $newscore = '';
-	}
-      } elsif ($oldscore !~ m/^$newscore/) {
-	$update=1;
-	$result.="Updating $stuname to $newscore<br />\n";
-	if ($newscore eq 'correct') { $newscore = 'correct_by_override'; }
-	if ($newscore eq 'incorrect') { $newscore = 'incorrect_by_override'; }
-	if ($newscore eq 'excused') { $newscore = 'excused'; }
-	if ($newscore eq 'ungraded') { $newscore = 'ungraded_attempted'; }
-      } else {
-	#$result.="$stuname:$part:$type:unchanged  $oldscore to $newscore:<br />\n";
-      }
-      if ($update) { $newrecord{"resource.$part.$type"}=$newscore; }
-    } else {
-      if ($oldscore ne $newscore) {
-	$newrecord{"resource.$part.$type"}=$newscore;
-	$result.="Updating $student"."'s status for $part.$type to $newscore<br />\n";
-      } else {
-	#$result.="$stuname:$part:$type:unchanged  $oldscore to $newscore:<br />\n";
+
+sub csvupload_javascript_forward_associate {
+    my $error1=&mt('You need to specify the username or ID');
+    my $error2=&mt('You need to specify at least one grading field');
+  return(<<ENDPICK);
+  function verify(vf) {
+    var foundsomething=0;
+    var founduname=0;
+    var foundID=0;
+    for (i=0;i<=vf.nfields.value;i++) {
+      tw=eval('vf.f'+i+'.selectedIndex');
+      if (tw==1) { foundID=1; }
+      if (tw==2) { founduname=1; }
+      if (tw>3) { foundsomething=1; }
+    }
+    if (founduname==0 && foundID==0) {
+	alert('$error1');
+	return;
+    }
+    if (foundsomething==0) {
+	alert('$error2');
+	return;
+    }
+    vf.submit();
+  }
+  function flip(vf,tf) {
+    var nw=eval('vf.f'+tf+'.selectedIndex');
+    var i;
+    //can not pick the same destination field twice
+    for (i=0;i<=vf.nfields.value;i++) {
+      if ((i!=tf) && (eval('vf.f'+i+'.selectedIndex')==nw)) {
+        eval('vf.f'+i+'.selectedIndex=0;')
       }
     }
   }
-  if ( scalar(keys(%newrecord)) > 0 ) {
-    $newrecord{"resource.regrader"}="$ENV{'user.name'}:$ENV{'user.domain'}";
-    &Apache::lonnet::cstore(\%newrecord,$symb,$courseid,$domain,$stuname);
+ENDPICK
+}
+
+sub csvuploadmap_header {
+    my ($request,$symb,$datatoken,$distotal)= @_;
+    my $javascript;
+    if ($env{'form.upfile_associate'} eq 'reverse') {
+	$javascript=&csvupload_javascript_reverse_associate();
+    } else {
+	$javascript=&csvupload_javascript_forward_associate();
+    }
+
+    my ($result) = &showResourceInfo($symb,$env{'form.probTitle'});
+    my $checked=(($env{'form.noFirstLine'})?' checked="checked"':'');
+    my $ignore=&mt('Ignore First Line');
+    $symb = &Apache::lonenc::check_encrypt($symb);
+    $request->print(<<ENDPICK);
+<form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
+<h3><span class="LC_info">Uploading Class Grades</span></h3>
+$result
+<hr />
+<h3>Identify fields</h3>
+Total number of records found in file: $distotal <hr />
+Enter as many fields as you can. The system will inform you and bring you back
+to this page if the data selected is insufficient to run your class.<hr />
+<input type="button" value="Reverse Association" onClick="javascript:this.form.associate.value='Reverse Association';submit(this.form);" />
+<label><input type="checkbox" name="noFirstLine" $checked />$ignore</label>
+<input type="hidden" name="associate"  value="" />
+<input type="hidden" name="phase"      value="three" />
+<input type="hidden" name="datatoken"  value="$datatoken" />
+<input type="hidden" name="fileupload" value="$env{'form.fileupload'}" />
+<input type="hidden" name="upfiletype" value="$env{'form.upfiletype'}" />
+<input type="hidden" name="upfile_associate" 
+                                       value="$env{'form.upfile_associate'}" />
+<input type="hidden" name="symb"       value="$symb" />
+<input type="hidden" name="saveState"  value="$env{'form.saveState'}" />
+<input type="hidden" name="probTitle"  value="$env{'form.probTitle'}" />
+<input type="hidden" name="command"    value="csvuploadoptions" />
+<hr />
+<script type="text/javascript" language="Javascript">
+$javascript
+</script>
+ENDPICK
+    return '';
 
-    $result.="Stored away ".scalar(keys(%newrecord))." elements.<br />\n";
-  }
-  return $result;
 }
 
-sub submission {
-  my ($request) = @_;
-  my $url=$ENV{'form.url'};
-  $url=~s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
-  if ($ENV{'form.student'} eq '') { &moreinfo($request,"Need student login id"); return ''; }
-#  if ($ENV{'form.student'} eq '') { &listStudents($request); return ''; }
-  my ($uname,$udom) = &finduser($ENV{'form.student'});
-  if ($uname eq '') { &moreinfo($request,"Unable to find student"); return ''; }
-  my $symb;
-  if ($ENV{'form.symb'}) {
-    $symb=$ENV{'form.symb'};
-  } else {
-    $symb=&Apache::lonnet::symbread($url);
-  }
-  if ($symb eq '') { $request->print("Unable to handle ambiguous references:$url:."); return ''; }
-  my $answer=&Apache::loncommon::get_previous_attempt($symb,$uname,$udom,
-						      $ENV{'request.course.id'});
-  my $result="<h2> Submission Record </h2>  $uname:$udom for $url <br />".$answer;
-  my $rendered=&Apache::loncommon::get_student_view($symb,$uname,$udom,
-						   $ENV{'request.course.id'});
-  $result.="Student's view of the problem:<br /> $rendered <br /> Correct answer:";
-
-  my $answer=&Apache::loncommon::get_student_answers($symb,$uname,$udom,
-						  $ENV{'request.course.id'});
-  $result.=$answer;
-  return $result;
+sub csvupload_fields {
+    my ($symb) = @_;
+    my (@parts) = &getpartlist($symb);
+    my @fields=(['ID','Student ID'],
+		['username','Student Username'],
+		['domain','Student Domain']);
+    my (undef,undef,$url) = &Apache::lonnet::decode_symb($symb);
+    foreach my $part (sort(@parts)) {
+	my @datum;
+	my $display=&Apache::lonnet::metadata($url,$part.'.display');
+	my $name=$part;
+	if  (!$display) { $display = $name; }
+	@datum=($name,$display);
+	if ($name=~/^stores_(.*)_awarded/) {
+	    push(@fields,['stores_'.$1.'_points',"Points [Part: $1]"]);
+	}
+	push(@fields,\@datum);
+    }
+    return (@fields);
 }
 
-sub viewgrades {
-  my ($request) = @_;
-  my $result='';
+sub csvuploadmap_footer {
+    my ($request,$i,$keyfields) =@_;
+    $request->print(<<ENDPICK);
+</table>
+<input type="hidden" name="nfields" value="$i" />
+<input type="hidden" name="keyfields" value="$keyfields" />
+<input type="button" onClick="javascript:verify(this.form)" value="Assign Grades" /><br />
+</form>
+ENDPICK
+}
 
-  #get resource reference
-  my $url=$ENV{'form.url'};
-  $url=~s-^http://($ENV{'SERVER_NAME'}|$ENV{'HTTP_HOST'})--;
-  my $symb=$ENV{'form.symb'};
-  if (!$symb) { $symb=&Apache::lonnet::symbread($url); }
-  if ($symb eq '') { $request->print("Unable to handle ambiguous references:$url:."); return ''; }
-
-  #get classlist
-  my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});
-  my $chome=$ENV{"course.$ENV{'request.course.id'}.home"};
-  #print "Found $cdom:$cnum:$chome<br />";
-  my (%classlist) = &getclasslist($cdom,$cnum,$chome,'0');
-  my $headerclr = '"#ccffff"';
-  my $cellclr = '"#ffffcc"';
-
-  #get list of parts for this problem
-  my (@parts) = &getpartlist($url);
-
-  $request->print ("<h2><font color=\"#339966\">Manual Grading</font></h2>");
-
-  #start the form
-  $result = '<form action="/adm/grades" method="post">'."\n".
-    '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".
-      '<input type="hidden" name="url" value="'.$url.'" />'."\n".
-	'<input type="hidden" name="command" value="editgrades" />'."\n".
-	  '<input type="submit" name="submit" value="Submit Changes" />'."\n".
-	    '<table border=0><tr><td bgcolor="#999999">'."\n".
-	     '<table border=0>'."\n".
-	      '<tr><td bgcolor='.$headerclr.'>UserId</td><td bgcolor='.$headerclr.'>Domain</td>'."\n";
-  foreach my $part (@parts) {
-     my $display=&Apache::lonnet::metadata($url,$part.'.display');
-     if  (!$display) { $display = &Apache::lonnet::metadata($url,$part.'.name'); }
-     $result.='<td bgcolor='.$headerclr.'>'.$display.'</td>'."\n";
+sub checkforfile_js {
+    my $result =<<CSVFORMJS;
+<script type="text/javascript" language="javascript">
+    function checkUpload(formname) {
+	if (formname.upfile.value == "") {
+	    alert("Please use the browse button to select a file from your local directory.");
+	    return false;
+	}
+	formname.submit();
+    }
+    </script>
+CSVFORMJS
+    return $result;
+}
+
+sub upcsvScores_form {
+    my ($request) = shift;
+    my ($symb)=&get_symb($request);
+    if (!$symb) {return '';}
+    my $result=&checkforfile_js();
+    $env{'form.probTitle'} = &Apache::lonnet::gettitle($symb);
+    my ($table) = &showResourceInfo($symb,$env{'form.probTitle'});
+    $result.=$table;
+    $result.='<br /><table width="100%" border="0"><tr><td bgcolor="#777777">'."\n";
+    $result.='<table width="100%" border="0"><tr bgcolor="#e6ffff"><td>'."\n";
+    $result.='&nbsp;<b>'.&mt('Specify a file containing the class scores for current resource').
+	'.</b></td></tr>'."\n";
+    $result.='<tr bgcolor=#ffffe6><td>'."\n";
+    my $upload=&mt("Upload Scores");
+    my $upfile_select=&Apache::loncommon::upfile_select_html();
+    my $ignore=&mt('Ignore First Line');
+    $symb = &Apache::lonenc::check_encrypt($symb);
+    $result.=<<ENDUPFORM;
+<form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
+<input type="hidden" name="symb" value="$symb" />
+<input type="hidden" name="command" value="csvuploadmap" />
+<input type="hidden" name="probTitle" value="$env{'form.probTitle'}" />
+<input type="hidden" name="saveState"  value="$env{'form.saveState'}" />
+$upfile_select
+<br /><input type="button" onClick="javascript:checkUpload(this.form);" value="$upload" />
+<label><input type="checkbox" name="noFirstLine" />$ignore</label>
+</form>
+ENDUPFORM
+    $result.=&Apache::loncommon::help_open_topic("Course_Convert_To_CSV",
+                           &mt("How do I create a CSV file from a spreadsheet"))
+    .'</td></tr></table>'."\n";
+    $result.='</td></tr></table><br /><br />'."\n";
+    $result.=&show_grading_menu_form($symb);
+    return $result;
+}
+
+
+sub csvuploadmap {
+    my ($request)= @_;
+    my ($symb)=&get_symb($request);
+    if (!$symb) {return '';}
+
+    my $datatoken;
+    if (!$env{'form.datatoken'}) {
+	$datatoken=&Apache::loncommon::upfile_store($request);
+    } else {
+	$datatoken=$env{'form.datatoken'};
+	&Apache::loncommon::load_tmp_file($request);
+    }
+    my @records=&Apache::loncommon::upfile_record_sep();
+    if ($env{'form.noFirstLine'}) { shift(@records); }
+    &csvuploadmap_header($request,$symb,$datatoken,$#records+1);
+    my ($i,$keyfields);
+    if (@records) {
+	my @fields=&csvupload_fields($symb);
+
+	if ($env{'form.upfile_associate'} eq 'reverse') {	
+	    &Apache::loncommon::csv_print_samples($request,\@records);
+	    $i=&Apache::loncommon::csv_print_select_table($request,\@records,
+							  \@fields);
+	    foreach (@fields) { $keyfields.=$_->[0].','; }
+	    chop($keyfields);
+	} else {
+	    unshift(@fields,['none','']);
+	    $i=&Apache::loncommon::csv_samples_select_table($request,\@records,
+							    \@fields);
+            foreach my $rec (@records) {
+                my %temp = &Apache::loncommon::record_sep($rec);
+                if (%temp) {
+                    $keyfields=join(',',sort(keys(%temp)));
+                    last;
+                }
+            }
+	}
+    }
+    &csvuploadmap_footer($request,$i,$keyfields);
+    $request->print(&show_grading_menu_form($symb));
+
+    return '';
+}
+
+sub csvuploadoptions {
+    my ($request)= @_;
+    my ($symb)=&get_symb($request);
+    my $checked=(($env{'form.noFirstLine'})?'1':'0');
+    my $ignore=&mt('Ignore First Line');
+    $request->print(<<ENDPICK);
+<form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
+<h3><span class="LC_info">Uploading Class Grade Options</span></h3>
+<input type="hidden" name="command"    value="csvuploadassign" />
+<!--
+<p>
+<label>
+   <input type="checkbox" name="show_full_results" />
+   Show a table of all changes
+</label>
+</p>
+-->
+<p>
+<label>
+   <input type="checkbox" name="overwite_scores" checked="checked" />
+   Overwrite any existing score
+</label>
+</p>
+ENDPICK
+    my %fields=&get_fields();
+    if (!defined($fields{'domain'})) {
+	my $domform = &Apache::loncommon::select_dom_form($env{'request.role.domain'},'default_domain');
+	$request->print("\n<p> Users are in domain: ".$domform."</p>\n");
+    }
+    foreach my $key (sort(keys(%env))) {
+	if ($key !~ /^form\.(.*)$/) { next; }
+	my $cleankey=$1;
+	if ($cleankey eq 'command') { next; }
+	$request->print('<input type="hidden" name="'.$cleankey.
+			'"  value="'.$env{$key}.'" />'."\n");
+    }
+    # FIXME do a check for any duplicated user ids...
+    # FIXME do a check for any invalid user ids?...
+    $request->print('<input type="submit" value="Assign Grades" /><br />
+<hr /></form>'."\n");
+    $request->print(&show_grading_menu_form($symb));
+    return '';
+}
+
+sub get_fields {
+    my %fields;
+    my @keyfields = split(/\,/,$env{'form.keyfields'});
+    for (my $i=0; $i<=$env{'form.nfields'}; $i++) {
+	if ($env{'form.upfile_associate'} eq 'reverse') {
+	    if ($env{'form.f'.$i} ne 'none') {
+		$fields{$keyfields[$i]}=$env{'form.f'.$i};
+	    }
+	} else {
+	    if ($env{'form.f'.$i} ne 'none') {
+		$fields{$env{'form.f'.$i}}=$keyfields[$i];
+	    }
+	}
+    }
+    return %fields;
+}
+
+sub csvuploadassign {
+    my ($request)= @_;
+    my ($symb)=&get_symb($request);
+    if (!$symb) {return '';}
+    my $error_msg = '';
+    &Apache::loncommon::load_tmp_file($request);
+    my @gradedata = &Apache::loncommon::upfile_record_sep();
+    if ($env{'form.noFirstLine'}) { shift(@gradedata); }
+    my %fields=&get_fields();
+    $request->print('<h3>Assigning Grades</h3>');
+    my $courseid=$env{'request.course.id'};
+    my ($classlist) = &getclasslist('all',0);
+    my @notallowed;
+    my @skipped;
+    my $countdone=0;
+    foreach my $grade (@gradedata) {
+	my %entries=&Apache::loncommon::record_sep($grade);
+	my $domain;
+	if ($entries{$fields{'domain'}}) {
+	    $domain=$entries{$fields{'domain'}};
+	} else {
+	    $domain=$env{'form.default_domain'};
+	}
+	$domain=~s/\s//g;
+	my $username=$entries{$fields{'username'}};
+	$username=~s/\s//g;
+	if (!$username) {
+	    my $id=$entries{$fields{'ID'}};
+	    $id=~s/\s//g;
+	    my %ids=&Apache::lonnet::idget($domain,$id);
+	    $username=$ids{$id};
+	}
+	if (!exists($$classlist{"$username:$domain"})) {
+	    my $id=$entries{$fields{'ID'}};
+	    $id=~s/\s//g;
+	    if ($id) {
+		push(@skipped,"$id:$domain");
+	    } else {
+		push(@skipped,"$username:$domain");
+	    }
+	    next;
+	}
+	my $usec=$classlist->{"$username:$domain"}[5];
+	if (!&canmodify($usec)) {
+	    push(@notallowed,"$username:$domain");
+	    next;
+	}
+	my %points;
+	my %grades;
+	foreach my $dest (keys(%fields)) {
+	    if ($dest eq 'ID' || $dest eq 'username' ||
+		$dest eq 'domain') { next; }
+	    if ($entries{$fields{$dest}} =~ /^\s*$/) { next; }
+	    if ($dest=~/stores_(.*)_points/) {
+		my $part=$1;
+		my $wgt =&Apache::lonnet::EXT('resource.'.$part.'.weight',
+					      $symb,$domain,$username);
+                if ($wgt) {
+                    $entries{$fields{$dest}}=~s/\s//g;
+                    my $pcr=$entries{$fields{$dest}} / $wgt;
+                    my $award=($pcr == 0) ? 'incorrect_by_override'
+                                          : 'correct_by_override';
+                    $grades{"resource.$part.awarded"}=$pcr;
+                    $grades{"resource.$part.solved"}=$award;
+                    $points{$part}=1;
+                } else {
+                    $error_msg = "<br />" .
+                        &mt("Some point values were assigned"
+                            ." for problems with a weight "
+                            ."of zero. These values were "
+                            ."ignored.");
+                }
+	    } else {
+		if ($dest=~/stores_(.*)_awarded/) { if ($points{$1}) {next;} }
+		if ($dest=~/stores_(.*)_solved/)  { if ($points{$1}) {next;} }
+		my $store_key=$dest;
+		$store_key=~s/^stores/resource/;
+		$store_key=~s/_/\./g;
+		$grades{$store_key}=$entries{$fields{$dest}};
+	    }
+	}
+	if (! %grades) { push(@skipped,"$username:$domain no data to save"); }
+	$grades{"resource.regrader"}="$env{'user.name'}:$env{'user.domain'}";
+	my $result=&Apache::lonnet::cstore(\%grades,$symb,
+					   $env{'request.course.id'},
+					   $domain,$username);
+	if ($result eq 'ok') {
+	    $request->print('.');
+	} else {
+	    $request->print("<p>
+                              <span class=\"LC_error\">
+                                 Failed to save student $username:$domain.
+                                 Message when trying to save was ($result)
+                              </span>
+                             </p>" );
+	}
+	$request->rflush();
+	$countdone++;
+    }
+    $request->print("<br />Saved $countdone students\n");
+    if (@skipped) {
+	$request->print('<p><h4><b>Skipped Students</b></h4></p>');
+	foreach my $student (@skipped) { $request->print("$student<br />\n"); }
+    }
+    if (@notallowed) {
+	$request->print('<p><span class="LC_error">Students Not Allowed to Modify</span></p>');
+	foreach my $student (@notallowed) { $request->print("$student<br />\n"); }
+    }
+    $request->print("<br />\n");
+    $request->print(&show_grading_menu_form($symb));
+    return $error_msg;
+}
+#------------- end of section for handling csv file upload ---------
+#
+#-------------------------------------------------------------------
+#
+#-------------- Next few routines handle grading by page/sequence
+#
+#--- Select a page/sequence and a student to grade
+sub pickStudentPage {
+    my ($request) = shift;
+
+    $request->print(<<LISTJAVASCRIPT);
+<script type="text/javascript" language="javascript">
+
+function checkPickOne(formname) {
+    if (radioSelection(formname.student) == null) {
+	alert("Please select the student you wish to grade.");
+	return;
+    }
+    ptr = pullDownSelection(formname.selectpage);
+    formname.page.value = formname["page"+ptr].value;
+    formname.title.value = formname["title"+ptr].value;
+    formname.submit();
+}
+
+</script>
+LISTJAVASCRIPT
+    &commonJSfunctions($request);
+    my ($symb) = &get_symb($request);
+    my $cdom      = $env{"course.$env{'request.course.id'}.domain"};
+    my $cnum      = $env{"course.$env{'request.course.id'}.num"};
+    my $getsec    = $env{'form.section'} eq '' ? 'all' : $env{'form.section'};
+
+    my $result='<h3><span class="LC_info">&nbsp;'.
+	'Manual Grading by Page or Sequence</span></h3>';
+
+    $result.='<form action="/adm/grades" method="post" name="displayPage">'."\n";
+    $result.='&nbsp;<b>Problems from:</b> <select name="selectpage">'."\n";
+    my ($titles,$symbx) = &getSymbMap();
+    my ($curpage) =&Apache::lonnet::decode_symb($symb); 
+#    my ($curpage,$mapId) =&Apache::lonnet::decode_symb($symb); 
+#    my $type=($curpage =~ /\.(page|sequence)/);
+    my $ctr=0;
+    foreach (@$titles) {
+	my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
+	$result.='<option value="'.$ctr.'" '.
+	    ($$symbx{$_} =~ /$curpage$/ ? 'selected="selected"' : '').
+	    '>'.$showtitle.'</option>'."\n";
+	$ctr++;
+    }
+    $result.= '</select>'."<br />\n";
+    $ctr=0;
+    foreach (@$titles) {
+	my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
+	$result.='<input type="hidden" name="page'.$ctr.'" value="'.$$symbx{$_}.'" />'."\n";
+	$result.='<input type="hidden" name="title'.$ctr.'" value="'.$showtitle.'" />'."\n";
+	$ctr++;
+    }
+    $result.='<input type="hidden" name="page" />'."\n".
+	'<input type="hidden" name="title" />'."\n";
+
+    $result.='&nbsp;<b>View Problems Text: </b><label><input type="radio" name="vProb" value="no" checked="checked" /> no </label>'."\n".
+	'<label><input type="radio" name="vProb" value="yes" /> yes </label>'."<br />\n";
+
+    $result.='&nbsp;<b>Submission Details: </b>'.
+	'<label><input type="radio" name="lastSub" value="none" /> none</label>'."\n".
+	'<label><input type="radio" name="lastSub" value="datesub" checked="checked" /> by dates and submissions</label>'."\n".
+	'<label><input type="radio" name="lastSub" value="all" /> all details</label>'."\n";
+    
+    $result.=&build_section_inputs();
+    my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
+    $result.='<input type="hidden" name="Status"  value="'.$stu_status.'" />'."\n".
+	'<input type="hidden" name="command" value="displayPage" />'."\n".
+	'<input type="hidden" name="symb"    value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
+	'<input type="hidden" name="saveState" value="'.$env{'form.saveState'}.'" />'."<br />\n";
+
+    $result.='&nbsp;<b>'.&mt('Use CODE:').' </b>'.
+	'<input type="text" name="CODE" value="" /><br />'."\n";
+
+    $result.='&nbsp;<input type="button" '.
+	'onClick="javascript:checkPickOne(this.form);"value="Next->" /><br />'."\n";
+
+    $request->print($result);
+
+    my $studentTable.='&nbsp;<b>Select a student you wish to grade and then click on the Next button.</b><br />'.
+	'<table border="0"><tr><td bgcolor="#777777">'.
+	'<table border="0"><tr bgcolor="#e6ffff">'.
+	'<td align="right">&nbsp;<b>No.</b></td>'.
+	'<td>'.&nameUserString('header').'</td>'.
+	'<td align="right">&nbsp;<b>No.</b></td>'.
+	'<td>'.&nameUserString('header').'</td></tr>';
+ 
+    my (undef,undef,$fullname) = &getclasslist($getsec,'1');
+    my $ptr = 1;
+    foreach my $student (sort 
+			 {
+			     if (lc($$fullname{$a}) ne lc($$fullname{$b})) {
+				 return (lc($$fullname{$a}) cmp lc($$fullname{$b}));
+			     }
+			     return $a cmp $b;
+			 } (keys(%$fullname))) {
+	my ($uname,$udom) = split(/:/,$student);
+	$studentTable.=($ptr%2 == 1 ? '<tr bgcolor="#ffffe6">' : '</td>');
+	$studentTable.='<td align="right">'.$ptr.'&nbsp;</td>';
+	$studentTable.='<td>&nbsp;<label><input type="radio" name="student" value="'.$student.'" /> '
+	    .&nameUserString(undef,$$fullname{$student},$uname,$udom)."</label>\n";
+	$studentTable.=($ptr%2 == 0 ? '</td></tr>' : '');
+	$ptr++;
+    }
+    $studentTable.='</td><td>&nbsp;</td><td>&nbsp;</td></tr>' if ($ptr%2 == 0);
+    $studentTable.='</table></td></tr></table>'."\n";
+    $studentTable.='<input type="button" '.
+	'onClick="javascript:checkPickOne(this.form);"value="Next->" /></form>'."\n";
+
+    $studentTable.=&show_grading_menu_form($symb);
+    $request->print($studentTable);
+
+    return '';
+}
+
+sub getSymbMap {
+    my $navmap = Apache::lonnavmaps::navmap->new();
+
+    my %symbx = ();
+    my @titles = ();
+    my $minder = 0;
+
+    # Gather every sequence that has problems.
+    my @sequences = $navmap->retrieveResources(undef, sub { shift->is_map(); },
+					       1,0,1);
+    for my $sequence ($navmap->getById('0.0'), @sequences) {
+	if ($navmap->hasResource($sequence, sub { shift->is_problem(); }, 0) ) {
+	    my $title = $minder.'.'.
+		&HTML::Entities::encode($sequence->compTitle(),'"\'&');
+	    push(@titles, $title); # minder in case two titles are identical
+	    $symbx{$title} = &HTML::Entities::encode($sequence->symb(),'"\'&');
+	    $minder++;
+	}
+    }
+    return \@titles,\%symbx;
+}
+
+#
+#--- Displays a page/sequence w/wo problems, w/wo submissions
+sub displayPage {
+    my ($request) = shift;
+
+    my ($symb) = &get_symb($request);
+    my $cdom      = $env{"course.$env{'request.course.id'}.domain"};
+    my $cnum      = $env{"course.$env{'request.course.id'}.num"};
+    my $getsec    = $env{'form.section'} eq '' ? 'all' : $env{'form.section'};
+    my $pageTitle = $env{'form.page'};
+    my ($classlist,undef,$fullname) = &getclasslist($getsec,'1');
+    my ($uname,$udom) = split(/:/,$env{'form.student'});
+    my $usec=$classlist->{$env{'form.student'}}[5];
+
+    #need to make sure we have the correct data for later EXT calls, 
+    #thus invalidate the cache
+    &Apache::lonnet::devalidatecourseresdata(
+                 $env{'course.'.$env{'request.course.id'}.'.num'},
+                 $env{'course.'.$env{'request.course.id'}.'.domain'});
+    &Apache::lonnet::clear_EXT_cache_status();
+
+    if (!&canview($usec)) {
+	$request->print('<span class="LC_warning">Unable to view requested student.('.$env{'form.student'}.')</span>');
+	$request->print(&show_grading_menu_form($symb));
+	return;
+    }
+    my $result='<h3><span class="LC_info">&nbsp;'.$env{'form.title'}.'</span></h3>';
+    $result.='<h3>&nbsp;Student: '.&nameUserString(undef,$$fullname{$env{'form.student'}},$uname,$udom).
+	'</h3>'."\n";
+    if (&Apache::lonnet::validCODE($env{'form.CODE'})) {
+	$result.='<h3>&nbsp;CODE: '.$env{'form.CODE'}.'</h3>'."\n";
+    } else {
+	delete($env{'form.CODE'});
+    }
+    &sub_page_js($request);
+    $request->print($result);
+
+    my $navmap = Apache::lonnavmaps::navmap->new();
+    my ($mapUrl, $id, $resUrl)=&Apache::lonnet::decode_symb($env{'form.page'});
+    my $map = $navmap->getResourceByUrl($resUrl); # add to navmaps
+    if (!$map) {
+	$request->print('<span class="LC_warning">Unable to view requested sequence. ('.$resUrl.')</span>');
+	$request->print(&show_grading_menu_form($symb));
+	return; 
+    }
+    my $iterator = $navmap->getIterator($map->map_start(),
+					$map->map_finish());
+
+    my $studentTable='<form action="/adm/grades" method="post" name="gradePage">'."\n".
+	'<input type="hidden" name="command" value="gradeByPage" />'."\n".
+	'<input type="hidden" name="fullname" value="'.$$fullname{$env{'form.student'}}.'" />'."\n".
+	'<input type="hidden" name="student" value="'.$env{'form.student'}.'" />'."\n".
+	'<input type="hidden" name="page"    value="'.$pageTitle.'" />'."\n".
+	'<input type="hidden" name="title"   value="'.$env{'form.title'}.'" />'."\n".
+	'<input type="hidden" name="symb"    value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
+	'<input type="hidden" name="overRideScore" value="no" />'."\n".
+	'<input type="hidden" name="saveState" value="'.$env{'form.saveState'}.'" />'."\n";
+
+    if (defined($env{'form.CODE'})) {
+	$studentTable.=
+	    '<input type="hidden" name="CODE" value="'.$env{'form.CODE'}.'" />'."\n";
+    }
+    my $checkIcon = '<img alt="'.&mt('Check Mark').
+	'" src="'.$request->dir_config('lonIconsURL').
+	'/check.gif" height="16" border="0" />';
+
+    $studentTable.='&nbsp;<b>Note:</b> Problems graded correct by the computer are marked with a '.$checkIcon.
+	' symbol.'."\n".
+	'<table border="0"><tr><td bgcolor="#777777">'.
+	'<table border="0"><tr bgcolor="#e6ffff">'.
+	'<td align="center"><b>&nbsp;Prob.&nbsp;</b></td>'.
+	'<td><b>&nbsp;'.($env{'form.vProb'} eq 'no' ? 'Title' : 'Problem Text').'/Grade</b></td></tr>';
+
+    &Apache::lonxml::clear_problem_counter();
+    my ($depth,$question,$prob) = (1,1,1);
+    $iterator->next(); # skip the first BEGIN_MAP
+    my $curRes = $iterator->next(); # for "current resource"
+    while ($depth > 0) {
+        if($curRes == $iterator->BEGIN_MAP) { $depth++; }
+        if($curRes == $iterator->END_MAP) { $depth--; }
+
+        if (ref($curRes) && $curRes->is_problem()) {
+	    my $parts = $curRes->parts();
+            my $title = $curRes->compTitle();
+	    my $symbx = $curRes->symb();
+	    $studentTable.='<tr bgcolor="#ffffe6"><td align="center" valign="top" >'.$prob.
+		(scalar(@{$parts}) == 1 ? '' : '<br />('.scalar(@{$parts}).'&nbsp;parts)').'</td>';
+	    $studentTable.='<td valign="top">';
+	    my %form = ('CODE' => $env{'form.CODE'},);
+	    if ($env{'form.vProb'} eq 'yes' ) {
+		$studentTable.=&show_problem($request,$symbx,$uname,$udom,1,
+					     undef,'both',\%form);
+	    } else {
+		my $companswer = &Apache::loncommon::get_student_answers($symbx,$uname,$udom,$env{'request.course.id'},%form);
+		$companswer =~ s|<form(.*?)>||g;
+		$companswer =~ s|</form>||g;
+#		while ($companswer =~ /(<a href\=\"javascript:newWindow.*?Script Vars<\/a>)/s) { #<a href="javascript:newWindow</a>
+#		    $companswer =~ s/$1/ /ms;
+#		    $request->print('match='.$1."<br />\n");
+#		}
+#		$companswer =~ s|<table border=\"1\">|<table border=\"0\">|g;
+		$studentTable.='&nbsp;<b>'.$title.'</b>&nbsp;<br />&nbsp;<b>Correct answer:</b><br />'.$companswer;
+	    }
+
+	    my %record = &Apache::lonnet::restore($symbx,$env{'request.course.id'},$udom,$uname);
+
+	    if ($env{'form.lastSub'} eq 'datesub') {
+		if ($record{'version'} eq '') {
+		    $studentTable.='<br />&nbsp;<span class="LC_warning">No recorded submission for this problem</span><br />';
+		} else {
+		    my %responseType = ();
+		    foreach my $partid (@{$parts}) {
+			my @responseIds =$curRes->responseIds($partid);
+			my @responseType =$curRes->responseType($partid);
+			my %responseIds;
+			for (my $i=0;$i<=$#responseIds;$i++) {
+			    $responseIds{$responseIds[$i]}=$responseType[$i];
+			}
+			$responseType{$partid} = \%responseIds;
+		    }
+		    $studentTable.= &displaySubByDates($symbx,\%record,$parts,\%responseType,$checkIcon,$uname,$udom);
+
+		}
+	    } elsif ($env{'form.lastSub'} eq 'all') {
+		my $last = ($env{'form.lastSub'} eq 'last' ? 'last' : '');
+		$studentTable.=&Apache::loncommon::get_previous_attempt($symbx,$uname,$udom,
+									$env{'request.course.id'},
+									'','.submission');
+ 
+	    }
+	    if (&canmodify($usec)) {
+		foreach my $partid (@{$parts}) {
+		    $studentTable.=&gradeBox($request,$symbx,$uname,$udom,$question,$partid,\%record);
+		    $studentTable.='<input type="hidden" name="q_'.$question.'" value="'.$partid.'" />'."\n";
+		    $question++;
+		}
+		$prob++;
+	    }
+	    $studentTable.='</td></tr>';
+
+	}
+        $curRes = $iterator->next();
+    }
+
+    $studentTable.='</table></td></tr></table>'."\n".
+	'<input type="button" value="Save" '.
+	'onClick="javascript:checkSubmitPage(this.form,'.$question.');" />'.
+	'</form>'."\n";
+    $studentTable.=&show_grading_menu_form($symb);
+    $request->print($studentTable);
+
+    return '';
+}
+
+sub displaySubByDates {
+    my ($symb,$record,$parts,$responseType,$checkIcon,$uname,$udom) = @_;
+    my $isCODE=0;
+    my $isTask = ($symb =~/\.task$/);
+    if (exists($record->{'resource.CODE'})) { $isCODE=1; }
+    my $studentTable='<table border="0" width="100%"><tr><td bgcolor="#777777">'.
+	'<table border="0" width="100%"><tr bgcolor="#e6ffff">'.
+	'<td><b>Date/Time</b></td>'.
+	($isCODE?'<td><b>CODE</b></td>':'').
+	'<td><b>Submission</b></td>'.
+	'<td><b>Status&nbsp;</b></td></tr>';
+    my ($version);
+    my %mark;
+    my %orders;
+    $mark{'correct_by_student'} = $checkIcon;
+    if (!exists($$record{'1:timestamp'})) {
+	return '<br />&nbsp;<span class="LC_warning">Nothing submitted - no attempts</span><br />';
+    }
+
+    my $interaction;
+    for ($version=1;$version<=$$record{'version'};$version++) {
+	my $timestamp = scalar(localtime($$record{$version.':timestamp'}));
+	if (exists($$record{$version.':resource.0.version'})) {
+	    $interaction = $$record{$version.':resource.0.version'};
+	}
+
+	my $where = ($isTask ? "$version:resource.$interaction"
+		             : "$version:resource");
+	$studentTable.='<tr bgcolor="#ffffff" valign="top"><td>'.$timestamp.'</td>';
+	if ($isCODE) {
+	    $studentTable.='<td>'.$record->{$version.':resource.CODE'}.'</td>';
+	}
+	my @versionKeys = split(/\:/,$$record{$version.':keys'});
+	my @displaySub = ();
+	foreach my $partid (@{$parts}) {
+	    my @matchKey = ($isTask ? sort(grep /^resource\.\d+\.\Q$partid\E\.award$/,@versionKeys)
+			            : sort(grep /^resource\.\Q$partid\E\..*?\.submission$/,@versionKeys));
+	    
+
+#	    next if ($$record{"$version:resource.$partid.solved"} eq '');
+	    my $display_part=&get_display_part($partid,$symb);
+	    foreach my $matchKey (@matchKey) {
+		if (exists($$record{$version.':'.$matchKey}) &&
+		    $$record{$version.':'.$matchKey} ne '') {
+
+		    my ($responseId)= ($isTask ? ($matchKey=~ /^resource\.(.*?)\.\Q$partid\E\.award$/)
+				               : ($matchKey=~ /^resource\.\Q$partid\E\.(.*?)\.submission$/));
+		    $displaySub[0].='<b>Part:</b>&nbsp;'.$display_part.'&nbsp;';
+		    $displaySub[0].='<span class="LC_internal_info">(ID&nbsp;'.
+			$responseId.')</span>&nbsp;<b>';
+		    if ($$record{"$where.$partid.tries"} eq '') {
+			$displaySub[0].='Trial&nbsp;not&nbsp;counted';
+		    } else {
+			$displaySub[0].='Trial&nbsp;'.
+			    $$record{"$where.$partid.tries"};
+		    }
+		    my $responseType=($isTask ? 'Task'
+                                              : $responseType->{$partid}->{$responseId});
+		    if (!exists($orders{$partid})) { $orders{$partid}={}; }
+		    if (!exists($orders{$partid}->{$responseId})) {
+			$orders{$partid}->{$responseId}=
+			    &get_order($partid,$responseId,$symb,$uname,$udom);
+		    }
+		    $displaySub[0].='</b>&nbsp; '.
+			&cleanRecord($$record{$version.':'.$matchKey},$responseType,$symb,$partid,$responseId,$record,$orders{$partid}->{$responseId},"$version:",$uname,$udom).'<br />';
+		}
+	    }
+	    if (exists($$record{"$where.$partid.checkedin"})) {
+		$displaySub[1].='Checked in by '.
+		    $$record{"$where.$partid.checkedin"}.' into slot '.
+		    $$record{"$where.$partid.checkedin.slot"}.
+		    '<br />';
+	    }
+	    if (exists $$record{"$where.$partid.award"}) {
+		$displaySub[1].='<b>Part:</b>&nbsp;'.$display_part.' &nbsp;'.
+		    lc($$record{"$where.$partid.award"}).' '.
+		    $mark{$$record{"$where.$partid.solved"}}.
+		    '<br />';
+	    }
+	    if (exists $$record{"$where.$partid.regrader"}) {
+		$displaySub[2].=$$record{"$where.$partid.regrader"}.
+		    ' (<b>'.&mt('Part').':</b> '.$display_part.')';
+	    } elsif ($$record{"$version:resource.$partid.regrader"} =~ /\S/) {
+		$displaySub[2].=
+		    $$record{"$version:resource.$partid.regrader"}.
+		    ' (<b>'.&mt('Part').':</b> '.$display_part.')';
+	    }
+	}
+	# needed because old essay regrader has not parts info
+	if (exists $$record{"$version:resource.regrader"}) {
+	    $displaySub[2].=$$record{"$version:resource.regrader"};
+	}
+	$studentTable.='<td>'.$displaySub[0].'&nbsp;</td><td>'.$displaySub[1];
+	if ($displaySub[2]) {
+	    $studentTable.='Manually graded by '.$displaySub[2];
+	}
+	$studentTable.='&nbsp;</td></tr>';
+    
+    }
+    $studentTable.='</table></td></tr></table>';
+    return $studentTable;
+}
+
+sub updateGradeByPage {
+    my ($request) = shift;
+
+    my $cdom      = $env{"course.$env{'request.course.id'}.domain"};
+    my $cnum      = $env{"course.$env{'request.course.id'}.num"};
+    my $getsec    = $env{'form.section'} eq '' ? 'all' : $env{'form.section'};
+    my $pageTitle = $env{'form.page'};
+    my ($classlist,undef,$fullname) = &getclasslist($getsec,'1');
+    my ($uname,$udom) = split(/:/,$env{'form.student'});
+    my $usec=$classlist->{$env{'form.student'}}[5];
+    if (!&canmodify($usec)) {
+	$request->print('<span class="LC_warning">Unable to modify requested student.('.$env{'form.student'}.'</span>');
+	$request->print(&show_grading_menu_form($env{'form.symb'}));
+	return;
+    }
+    my $result='<h3><span class="LC_info">&nbsp;'.$env{'form.title'}.'</span></h3>';
+    $result.='<h3>&nbsp;Student: '.&nameUserString(undef,$env{'form.fullname'},$uname,$udom).
+	'</h3>'."\n";
+
+    $request->print($result);
+
+    my $navmap = Apache::lonnavmaps::navmap->new();
+    my ($mapUrl, $id, $resUrl) = &Apache::lonnet::decode_symb( $env{'form.page'});
+    my $map = $navmap->getResourceByUrl($resUrl); # add to navmaps
+    if (!$map) {
+	$request->print('<span class="LC_warning">Unable to grade requested sequence. ('.$resUrl.')</span>');
+	my ($symb)=&get_symb($request);
+	$request->print(&show_grading_menu_form($symb));
+	return; 
+    }
+    my $iterator = $navmap->getIterator($map->map_start(),
+					$map->map_finish());
+
+    my $studentTable='<table border="0"><tr><td bgcolor="#777777">'.
+	'<table border="0"><tr bgcolor="#e6ffff">'.
+	'<td align="center"><b>&nbsp;Prob.&nbsp;</b></td>'.
+	'<td><b>&nbsp;Title&nbsp;</b></td>'.
+	'<td><b>&nbsp;Previous Score&nbsp;</b></td>'.
+	'<td><b>&nbsp;New Score&nbsp;</b></td></tr>';
+
+    $iterator->next(); # skip the first BEGIN_MAP
+    my $curRes = $iterator->next(); # for "current resource"
+    my ($depth,$question,$prob,$changeflag)= (1,1,1,0);
+    while ($depth > 0) {
+        if($curRes == $iterator->BEGIN_MAP) { $depth++; }
+        if($curRes == $iterator->END_MAP) { $depth--; }
+
+        if (ref($curRes) && $curRes->is_problem()) {
+	    my $parts = $curRes->parts();
+            my $title = $curRes->compTitle();
+	    my $symbx = $curRes->symb();
+	    $studentTable.='<tr bgcolor="#ffffe6"><td align="center" valign="top" >'.$prob.
+		(scalar(@{$parts}) == 1 ? '' : '<br />('.scalar(@{$parts}).'&nbsp;parts)').'</td>';
+	    $studentTable.='<td valign="top">&nbsp;<b>'.$title.'</b>&nbsp;</td>';
+
+	    my %newrecord=();
+	    my @displayPts=();
+            my %aggregate = ();
+            my $aggregateflag = 0;
+	    foreach my $partid (@{$parts}) {
+		my $newpts = $env{'form.GD_BOX'.$question.'_'.$partid};
+		my $oldpts = $env{'form.oldpts'.$question.'_'.$partid};
+
+		my $wgt = $env{'form.WGT'.$question.'_'.$partid} != 0 ? 
+		    $env{'form.WGT'.$question.'_'.$partid} : 1;
+		my $partial = $newpts/$wgt;
+		my $score;
+		if ($partial > 0) {
+		    $score = 'correct_by_override';
+		} elsif ($newpts ne '') { #empty is taken as 0
+		    $score = 'incorrect_by_override';
+		}
+		my $dropMenu = $env{'form.GD_SEL'.$question.'_'.$partid};
+		if ($dropMenu eq 'excused') {
+		    $partial = '';
+		    $score = 'excused';
+		} elsif ($dropMenu eq 'reset status'
+			 && $env{'form.solved'.$question.'_'.$partid} ne '') { #update only if previous record exists
+		    $newrecord{'resource.'.$partid.'.tries'} = 0;
+		    $newrecord{'resource.'.$partid.'.solved'} = '';
+		    $newrecord{'resource.'.$partid.'.award'} = '';
+		    $newrecord{'resource.'.$partid.'.awarded'} = 0;
+		    $newrecord{'resource.'.$partid.'.regrader'} = "$env{'user.name'}:$env{'user.domain'}";
+		    $changeflag++;
+		    $newpts = '';
+                    
+                    my $aggtries =  $env{'form.aggtries'.$question.'_'.$partid};
+                    my $totaltries = $env{'form.totaltries'.$question.'_'.$partid};
+                    my $solvedstatus = $env{'form.solved'.$question.'_'.$partid};
+                    if ($aggtries > 0) {
+                        &decrement_aggs($symbx,$partid,\%aggregate,$aggtries,$totaltries,$solvedstatus);
+                        $aggregateflag = 1;
+                    }
+		}
+		my $display_part=&get_display_part($partid,$curRes->symb());
+		my $oldstatus = $env{'form.solved'.$question.'_'.$partid};
+		$displayPts[0].='&nbsp;<b>Part:</b> '.$display_part.' = '.
+		    (($oldstatus eq 'excused') ? 'excused' : $oldpts).
+		    '&nbsp;<br />';
+		$displayPts[1].='&nbsp;<b>Part:</b> '.$display_part.' = '.
+		     (($score eq 'excused') ? 'excused' : $newpts).
+		    '&nbsp;<br />';
+		$question++;
+		next if ($dropMenu eq 'reset status' || ($newpts eq $oldpts && $score ne 'excused'));
+
+		$newrecord{'resource.'.$partid.'.awarded'}  = $partial if $partial ne '';
+		$newrecord{'resource.'.$partid.'.solved'}   = $score if $score ne '';
+		$newrecord{'resource.'.$partid.'.regrader'} = "$env{'user.name'}:$env{'user.domain'}"
+		    if (scalar(keys(%newrecord)) > 0);
+
+		$changeflag++;
+	    }
+	    if (scalar(keys(%newrecord)) > 0) {
+		my %record = 
+		    &Apache::lonnet::restore($symbx,$env{'request.course.id'},
+					     $udom,$uname);
+
+		if (&Apache::lonnet::validCODE($env{'form.CODE'})) {
+		    $newrecord{'resource.CODE'} = $env{'form.CODE'};
+		} elsif (&Apache::lonnet::validCODE($record{'resource.CODE'})) {
+		    $newrecord{'resource.CODE'} = '';
+		}
+		&Apache::lonnet::cstore(\%newrecord,$symbx,$env{'request.course.id'},
+					$udom,$uname);
+		%record = &Apache::lonnet::restore($symbx,
+						   $env{'request.course.id'},
+						   $udom,$uname);
+		&check_and_remove_from_queue($parts,\%record,undef,$symbx,
+					     $cdom,$cnum,$udom,$uname);
+	    }
+	    
+            if ($aggregateflag) {
+                &Apache::lonnet::cinc('nohist_resourcetracker',\%aggregate,
+                      $env{'course.'.$env{'request.course.id'}.'.domain'},
+                      $env{'course.'.$env{'request.course.id'}.'.num'});
+            }
+
+	    $studentTable.='<td valign="top">'.$displayPts[0].'</td>'.
+		'<td valign="top">'.$displayPts[1].'</td>'.
+		'</tr>';
+
+	    $prob++;
+	}
+        $curRes = $iterator->next();
+    }
+
+    $studentTable.='</td></tr></table></td></tr></table>';
+    $studentTable.=&show_grading_menu_form($env{'form.symb'});
+    my $grademsg=($changeflag == 0 ? 'No score was changed or updated.' :
+		  'The scores were changed for '.
+		  $changeflag.' problem'.($changeflag == 1 ? '.' : 's.'));
+    $request->print($grademsg.$studentTable);
+
+    return '';
+}
+
+#-------- end of section for handling grading by page/sequence ---------
+#
+#-------------------------------------------------------------------
+
+#--------------------Scantron Grading-----------------------------------
+#
+#------ start of section for handling grading by page/sequence ---------
+
+=pod
+
+=head1 Bubble sheet grading routines
+
+  For this documentation:
+
+   'scanline' refers to the full line of characters
+   from the file that we are parsing that represents one entire sheet
+
+   'bubble line' refers to the data
+   representing the line of bubbles that are on the physical bubble sheet
+
+
+The overall process is that a scanned in bubble sheet data is uploaded
+into a course. When a user wants to grade, they select a
+sequence/folder of resources, a file of bubble sheet info, and pick
+one of the predefined configurations for what each scanline looks
+like.
+
+Next each scanline is checked for any errors of either 'missing
+bubbles' (it's an error because it may have been mis-scanned
+because too light bubbling), 'double bubble' (each bubble line should
+have no more that one letter picked), invalid or duplicated CODE,
+invalid student ID
+
+If the CODE option is used that determines the randomization of the
+homework problems, either way the student ID is looked up into a
+username:domain.
+
+During the validation phase the instructor can choose to skip scanlines. 
+
+After the validation phase, there are now 3 bubble sheet files
+
+  scantron_original_filename (unmodified original file)
+  scantron_corrected_filename (file where the corrected information has replaced the original information)
+  scantron_skipped_filename (contains the exact text of scanlines that where skipped)
+
+Also there is a separate hash nohist_scantrondata that contains extra
+correction information that isn't representable in the bubble sheet
+file (see &scantron_getfile() for more information)
+
+After all scanlines are either valid, marked as valid or skipped, then
+foreach line foreach problem in the picked sequence, an ssi request is
+made that simulates a user submitting their selected letter(s) against
+the homework problem.
+
+=over 4
+
+
+
+=item defaultFormData
+
+  Returns html hidden inputs used to hold context/default values.
+
+ Arguments:
+  $symb - $symb of the current resource 
+
+=cut
+
+sub defaultFormData {
+    my ($symb)=@_;
+    return '<input type="hidden" name="symb"    value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
+     '<input type="hidden" name="saveState" value="'.$env{'form.saveState'}.'" />'."\n".
+     '<input type="hidden" name="probTitle" value="'.$env{'form.probTitle'}.'" />'."\n";
+}
+
+
+=pod 
+
+=item getSequenceDropDown
+
+   Return html dropdown of possible sequences to grade
+ 
+ Arguments:
+   $symb - $symb of the current resource 
+
+=cut
+
+sub getSequenceDropDown {
+    my ($symb)=@_;
+    my $result='<select name="selectpage">'."\n";
+    my ($titles,$symbx) = &getSymbMap();
+    my ($curpage)=&Apache::lonnet::decode_symb($symb); 
+    my $ctr=0;
+    foreach (@$titles) {
+	my ($minder,$showtitle) = ($_ =~ /(\d+)\.(.*)/);
+	$result.='<option value="'.$$symbx{$_}.'" '.
+	    ($$symbx{$_} =~ /$curpage$/ ? 'selected="selected"' : '').
+	    '>'.$showtitle.'</option>'."\n";
+	$ctr++;
+    }
+    $result.= '</select>';
+    return $result;
+}
+
+
+=pod 
+
+=item scantron_filenames
+
+   Returns a list of the scantron files in the current course 
+
+=cut
+
+sub scantron_filenames {
+    my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
+    my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
+    my @files=&Apache::lonnet::dirlist('userfiles',$cdom,$cname,
+				    &propath($cdom,$cname));
+    my @possiblenames;
+    foreach my $filename (sort(@files)) {
+	($filename)=split(/&/,$filename);
+	if ($filename!~/^scantron_orig_/) { next ; }
+	$filename=~s/^scantron_orig_//;
+	push(@possiblenames,$filename);
+    }
+    return @possiblenames;
+}
+
+=pod 
+
+=item scantron_uploads
+
+   Returns  html drop-down list of scantron files in current course.
+
+ Arguments:
+   $file2grade - filename to set as selected in the dropdown
+
+=cut
+
+sub scantron_uploads {
+    my ($file2grade) = @_;
+    my $result=	'<select name="scantron_selectfile">';
+    $result.="<option></option>";
+    foreach my $filename (sort(&scantron_filenames())) {
+	$result.="<option".($filename eq $file2grade ? ' selected="selected"':'').">$filename</option>\n";
+    }
+    $result.="</select>";
+    return $result;
+}
+
+=pod 
+
+=item scantron_scantab
+
+  Returns html drop down of the scantron formats in the scantronformat.tab
+  file.
+
+=cut
+
+sub scantron_scantab {
+    my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
+    my $result='<select name="scantron_format">'."\n";
+    $result.='<option></option>'."\n";
+    foreach my $line (<$fh>) {
+	my ($name,$descrip)=split(/:/,$line);
+	if ($name =~ /^\#/) { next; }
+	$result.='<option value="'.$name.'">'.$descrip.'</option>'."\n";
+    }
+    $result.='</select>'."\n";
+
+    return $result;
+}
+
+=pod 
+
+=item scantron_CODElist
+
+  Returns html drop down of the saved CODE lists from current course,
+  generated from earlier printings.
+
+=cut
+
+sub scantron_CODElist {
+    my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+    my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+    my @names=&Apache::lonnet::getkeys('CODEs',$cdom,$cnum);
+    my $namechoice='<option></option>';
+    foreach my $name (sort {uc($a) cmp uc($b)} @names) {
+	if ($name =~ /^error: 2 /) { next; }
+	if ($name =~ /^type\0/) { next; }
+	$namechoice.='<option value="'.$name.'">'.$name.'</option>';
+    }
+    $namechoice='<select name="scantron_CODElist">'.$namechoice.'</select>';
+    return $namechoice;
+}
+
+=pod 
+
+=item scantron_CODEunique
+
+  Returns the html for "Each CODE to be used once" radio.
+
+=cut
+
+sub scantron_CODEunique {
+    my $result='<span style="white-space: nowrap;">
+                 <label><input type="radio" name="scantron_CODEunique"
+                        value="yes" checked="checked" />'.&mt('Yes').' </label>
+                </span>
+                <span style="white-space: nowrap;">
+                 <label><input type="radio" name="scantron_CODEunique"
+                        value="no" />'.&mt('No').' </label>
+                </span>';
+    return $result;
+}
+
+=pod 
+
+=item scantron_selectphase
+
+  Generates the initial screen to start the bubble sheet process.
+  Allows for - starting a grading run.
+             - downloading existing scan data (original, corrected
+                                                or skipped info)
+
+             - uploading new scan data
+
+ Arguments:
+  $r          - The Apache request object
+  $file2grade - name of the file that contain the scanned data to score
+
+=cut
+
+sub scantron_selectphase {
+    my ($r,$file2grade) = @_;
+    my ($symb)=&get_symb($r);
+    if (!$symb) {return '';}
+    my $sequence_selector=&getSequenceDropDown($symb);
+    my $default_form_data=&defaultFormData($symb);
+    my $grading_menu_button=&show_grading_menu_form($symb);
+    my $file_selector=&scantron_uploads($file2grade);
+    my $format_selector=&scantron_scantab();
+    my $CODE_selector=&scantron_CODElist();
+    my $CODE_unique=&scantron_CODEunique();
+    my $result;
+
+    # Chunk of form to prompt for a file to grade and how:
+
+    $result.= <<SCANTRONFORM;
+    <table width="100%" border="0">
+    <tr>
+     <form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantron_process">
+      <td bgcolor="#777777">
+       <input type="hidden" name="command" value="scantron_warning" />
+        $default_form_data
+        <table width="100%" border="0">
+          <tr bgcolor="#e6ffff">
+            <td colspan="2">
+              &nbsp;<b>Specify file and which Folder/Sequence to grade</b>
+            </td>
+          </tr>
+          <tr bgcolor="#ffffe6">
+            <td> Sequence to grade: </td><td> $sequence_selector </td>
+          </tr>
+          <tr bgcolor="#ffffe6">
+            <td> Filename of scoring office file: </td><td> $file_selector </td>
+          </tr>
+          <tr bgcolor="#ffffe6">
+            <td> Format of data file: </td><td> $format_selector </td>
+          </tr>
+          <tr bgcolor="#ffffe6">
+            <td> Saved CODEs to validate against: </td><td> $CODE_selector</td>
+          </tr>
+          <tr bgcolor="#ffffe6">
+            <td> Each CODE is only to be used once:</td><td> $CODE_unique </td>
+          </tr>
+          <tr bgcolor="#ffffe6">
+	    <td> Options: </td>
+            <td>
+	       <label><input type="checkbox" name="scantron_options_redo" value="redo_skipped"/> Do only previously skipped records</label> <br />
+               <label><input type="checkbox" name="scantron_options_ignore" value="ignore_corrections"/> Remove all existing corrections</label> <br />
+               <label><input type="checkbox" name="scantron_options_hidden" value="ignore_hidden"/> Skip hidden resources when grading</label>
+	    </td>
+          </tr>
+          <tr bgcolor="#ffffe6">
+            <td colspan="2">
+              <input type="submit" value="Grading: Validate Scantron Records" />
+            </td>
+          </tr>
+        </table>
+       </td>
+     </form>
+    </tr>
+SCANTRONFORM
+   
+    $r->print($result);
+
+    if (&Apache::lonnet::allowed('usc',$env{'request.role.domain'}) ||
+        &Apache::lonnet::allowed('usc',$env{'request.course.id'})) {
+
+	# Chunk of form to prompt for a scantron file upload.
+
+        $r->print(<<SCANTRONFORM);
+    <tr>
+      <td bgcolor="#777777">
+        <table width="100%" border="0">
+          <tr bgcolor="#e6ffff">
+            <td>
+              &nbsp;<b>Specify a Scantron data file to upload.</b>
+            </td>
+          </tr>
+          <tr bgcolor="#ffffe6">
+            <td>
+SCANTRONFORM
+    my $default_form_data=&defaultFormData(&get_symb($r,1));
+    my $cdom= $env{'course.'.$env{'request.course.id'}.'.domain'};
+    my $cnum= $env{'course.'.$env{'request.course.id'}.'.num'};
+    $r->print(<<UPLOAD);
+              <script type="text/javascript" language="javascript">
+    function checkUpload(formname) {
+	if (formname.upfile.value == "") {
+	    alert("Please use the browse button to select a file from your local directory.");
+	    return false;
+	}
+	formname.submit();
+    }
+              </script>
+
+              <form enctype='multipart/form-data' action='/adm/grades' name='rules' method='post'>
+                $default_form_data
+                <input name='courseid' type='hidden' value='$cnum' />
+                <input name='domainid' type='hidden' value='$cdom' />
+                <input name='command' value='scantronupload_save' type='hidden' />
+                File to upload:<input type="file" name="upfile" size="50" />
+                <br />
+                <input type="button" onClick="javascript:checkUpload(this.form);" value="Upload Scantron Data" />
+              </form>
+UPLOAD
+
+        $r->print(<<SCANTRONFORM);
+            </td>
+          </tr>
+        </table>
+      </td>
+    </tr>
+SCANTRONFORM
+    }
+
+    # Chunk of the form that prompts to view a scoring office file,
+    # corrected file, skipped records in a file.
+
+    $r->print(<<SCANTRONFORM);
+    <tr>
+      <form action='/adm/grades' name='scantron_download'>
+        <td bgcolor="#777777">
+	  $default_form_data
+          <input type="hidden" name="command" value="scantron_download" />
+          <table width="100%" border="0">
+            <tr bgcolor="#e6ffff">
+              <td colspan="2">
+                &nbsp;<b>Download a scoring office file</b>
+              </td>
+            </tr>
+            <tr bgcolor="#ffffe6">
+              <td> Filename of scoring office file: </td><td> $file_selector </td>
+            </tr>
+            <tr bgcolor="#ffffe6">
+              <td colspan="2">
+                <input type="submit" value="Download: Show List of Associated Files" />
+              </td>
+            </tr>
+          </table>
+        </td>
+      </form>
+    </tr>
+SCANTRONFORM
+
+    $r->print('<tr><td bgcolor="#777777">');
+    &Apache::lonpickcode::code_list($r,2);
+    $r->print('</td></tr></table>');
+    $r->print($grading_menu_button);
+    return
+}
+
+=pod
+
+=item get_scantron_config
+
+   Parse and return the scantron configuration line selected as a
+   hash of configuration file fields.
+
+ Arguments:
+    which - the name of the configuration to parse from the file.
+
+
+ Returns:
+            If the named configuration is not in the file, an empty
+            hash is returned.
+    a hash with the fields
+      name         - internal name for the this configuration setup
+      description  - text to display to operator that describes this config
+      CODElocation - if 0 or the string 'none'
+                          - no CODE exists for this config
+                     if -1 || the string 'letter'
+                          - a CODE exists for this config and is
+                            a string of letters
+                     Unsupported value (but planned for future support)
+                          if a positive integer
+                               - The CODE exists as the first n items from
+                                 the question section of the form
+                          if the string 'number'
+                               - The CODE exists for this config and is
+                                 a string of numbers
+      CODEstart   - (only matter if a CODE exists) column in the line where
+                     the CODE starts
+      CODElength  - length of the CODE
+      IDstart     - column where the student ID number starts
+      IDlength    - length of the student ID info
+      Qstart      - column where the information from the bubbled
+                    'questions' start
+      Qlength     - number of columns comprising a single bubble line from
+                    the sheet. (usually either 1 or 10)
+      Qon         - either a single character representing the character used
+                    to signal a bubble was chosen in the positional setup, or
+                    the string 'letter' if the letter of the chosen bubble is
+                    in the final, or 'number' if a number representing the
+                    chosen bubble is in the file (1->A 0->J)
+      Qoff        - the character used to represent that a bubble was
+                    left blank
+      PaperID     - if the scanning process generates a unique number for each
+                    sheet scanned the column that this ID number starts in
+      PaperIDlength - number of columns that comprise the unique ID number
+                      for the sheet of paper
+      FirstName   - column that the first name starts in
+      FirstNameLength - number of columns that the first name spans
+ 
+      LastName    - column that the last name starts in
+      LastNameLength - number of columns that the last name spans
+
+=cut
+
+sub get_scantron_config {
+    my ($which) = @_;
+    my $fh=Apache::File->new($Apache::lonnet::perlvar{'lonTabDir'}.'/scantronformat.tab');
+    my %config;
+    #FIXME probably should move to XML it has already gotten a bit much now
+    foreach my $line (<$fh>) {
+	my ($name,$descrip)=split(/:/,$line);
+	if ($name ne $which ) { next; }
+	chomp($line);
+	my @config=split(/:/,$line);
+	$config{'name'}=$config[0];
+	$config{'description'}=$config[1];
+	$config{'CODElocation'}=$config[2];
+	$config{'CODEstart'}=$config[3];
+	$config{'CODElength'}=$config[4];
+	$config{'IDstart'}=$config[5];
+	$config{'IDlength'}=$config[6];
+	$config{'Qstart'}=$config[7];
+	$config{'Qlength'}=$config[8];
+	$config{'Qoff'}=$config[9];
+	$config{'Qon'}=$config[10];
+	$config{'PaperID'}=$config[11];
+	$config{'PaperIDlength'}=$config[12];
+	$config{'FirstName'}=$config[13];
+	$config{'FirstNamelength'}=$config[14];
+	$config{'LastName'}=$config[15];
+	$config{'LastNamelength'}=$config[16];
+	last;
+    }
+    return %config;
+}
+
+=pod 
+
+=item username_to_idmap
+
+    creates a hash keyed by student id with values of the corresponding
+    student username:domain.
+
+  Arguments:
+
+    $classlist - reference to the class list hash. This is a hash
+                 keyed by student name:domain  whose elements are references
+                 to arrays containing various chunks of information
+                 about the student. (See loncoursedata for more info).
+
+  Returns
+    %idmap - the constructed hash
+
+=cut
+
+sub username_to_idmap {
+    my ($classlist)= @_;
+    my %idmap;
+    foreach my $student (keys(%$classlist)) {
+	$idmap{$classlist->{$student}->[&Apache::loncoursedata::CL_ID]}=
+	    $student;
+    }
+    return %idmap;
+}
+
+=pod
+
+=item scantron_fixup_scanline
+
+   Process a requested correction to a scanline.
+
+  Arguments:
+    $scantron_config   - hash from &get_scantron_config()
+    $scan_data         - hash of correction information 
+                          (see &scantron_getfile())
+    $line              - existing scanline
+    $whichline         - line number of the passed in scanline
+    $field             - type of change to process 
+                         (either 
+                          'ID'     -> correct the student ID number
+                          'CODE'   -> correct the CODE
+                          'answer' -> fixup the submitted answers)
+    
+   $args               - hash of additional info,
+                          - 'ID' 
+                               'newid' -> studentID to use in replacement
+                                          of existing one
+                          - 'CODE' 
+                               'CODE_ignore_dup' - set to true if duplicates
+                                                   should be ignored.
+	                       'CODE' - is new code or 'use_unfound'
+                                        if the existing unfound code should
+                                        be used as is
+                          - 'answer'
+                               'response' - new answer or 'none' if blank
+                               'question' - the bubble line to change
+
+  Returns:
+    $line - the modified scanline
+
+  Side effects: 
+    $scan_data - may be updated
+
+=cut
+
+
+sub scantron_fixup_scanline {
+    my ($scantron_config,$scan_data,$line,$whichline,$field,$args)=@_;
+
+    if ($field eq 'ID') {
+	if (length($args->{'newid'}) > $$scantron_config{'IDlength'}) {
+	    return ($line,1,'New value too large');
+	}
+	if (length($args->{'newid'}) < $$scantron_config{'IDlength'}) {
+	    $args->{'newid'}=sprintf('%-'.$$scantron_config{'IDlength'}.'s',
+				     $args->{'newid'});
+	}
+	substr($line,$$scantron_config{'IDstart'}-1,
+	       $$scantron_config{'IDlength'})=$args->{'newid'};
+	if ($args->{'newid'}=~/^\s*$/) {
+	    &scan_data($scan_data,"$whichline.user",
+		       $args->{'username'}.':'.$args->{'domain'});
+	}
+    } elsif ($field eq 'CODE') {
+	if ($args->{'CODE_ignore_dup'}) {
+	    &scan_data($scan_data,"$whichline.CODE_ignore_dup",'1');
+	}
+	&scan_data($scan_data,"$whichline.useCODE",'1');
+	if ($args->{'CODE'} ne 'use_unfound') {
+	    if (length($args->{'CODE'}) > $$scantron_config{'CODElength'}) {
+		return ($line,1,'New CODE value too large');
+	    }
+	    if (length($args->{'CODE'}) < $$scantron_config{'CODElength'}) {
+		$args->{'CODE'}=sprintf('%-'.$$scantron_config{'CODElength'}.'s',$args->{'CODE'});
+	    }
+	    substr($line,$$scantron_config{'CODEstart'}-1,
+		   $$scantron_config{'CODElength'})=$args->{'CODE'};
+	}
+    } elsif ($field eq 'answer') {
+	my $length=$scantron_config->{'Qlength'};
+	my $off=$scantron_config->{'Qoff'};
+	my $on=$scantron_config->{'Qon'};
+	my $answer=${off}x$length;
+	if ($args->{'response'} eq 'none') {
+	    &scan_data($scan_data,
+		       "$whichline.no_bubble.".$args->{'question'},'1');
+	} else {
+	    if ($on eq 'letter') {
+		my @alphabet=('A'..'Z');
+		$answer=$alphabet[$args->{'response'}];
+	    } elsif ($on eq 'number') {
+		$answer=$args->{'response'}+1;
+		if ($answer == 10) { $answer = '0'; }
+	    } else {
+		substr($answer,$args->{'response'},1)=$on;
+	    }
+	    &scan_data($scan_data,
+		       "$whichline.no_bubble.".$args->{'question'},undef,'1');
+	}
+	my $where=$length*($args->{'question'}-1)+$scantron_config->{'Qstart'};
+	substr($line,$where-1,$length)=$answer;
+    }
+    return $line;
+}
+
+=pod
+
+=item scan_data
+
+    Edit or look up  an item in the scan_data hash.
+
+  Arguments:
+    $scan_data  - The hash (see scantron_getfile)
+    $key        - shorthand of the key to edit (actual key is
+                  scantronfilename_key).
+    $data        - New value of the hash entry.
+    $delete      - If true, the entry is removed from the hash.
+
+  Returns:
+    The new value of the hash table field (undefined if deleted).
+
+=cut
+
+
+sub scan_data {
+    my ($scan_data,$key,$value,$delete)=@_;
+    my $filename=$env{'form.scantron_selectfile'};
+    if (defined($value)) {
+	$scan_data->{$filename.'_'.$key} = $value;
+    }
+    if ($delete) { delete($scan_data->{$filename.'_'.$key}); }
+    return $scan_data->{$filename.'_'.$key};
+}
+
+=pod 
+
+=item scantron_parse_scanline
+
+  Decodes a scanline from the selected scantron file
+
+ Arguments:
+    line             - The text of the scantron file line to process
+    whichline        - Line number
+    scantron_config  - Hash describing the format of the scantron lines.
+    scan_data        - Hash of extra information about the scanline
+                       (see scantron_getfile for more information)
+    just_header      - True if should not process question answers but only
+                       the stuff to the left of the answers.
+ Returns:
+   Hash containing the result of parsing the scanline
+
+   Keys are all proceeded by the string 'scantron.'
+
+       CODE    - the CODE in use for this scanline
+       useCODE - 1 if the CODE is invalid but it usage has been forced
+                 by the operator
+       CODE_ignore_dup - 1 if the CODE is a duplicated use when unique
+                            CODEs were selected, but the usage has been
+                            forced by the operator
+       ID  - student ID
+       PaperID - if used, the ID number printed on the sheet when the 
+                 paper was scanned
+       FirstName - first name from the sheet
+       LastName  - last name from the sheet
+
+     if just_header was not true these key may also exist
+
+       missingerror - a list of bubble ranges that are considered to be answers
+                      to a single question that don't have any bubbles filled in.
+                      Of the form questionnumber:firstbubblenumber:count.
+       doubleerror  - a list of bubble ranges that are considered to be answers
+                      to a single question that have more than one bubble filled in.
+                      Of the form questionnumber::firstbubblenumber:count
+   
+                In the above, count is the number of bubble responses in the
+                input line needed to represent the possible answers to the question.
+                e.g. a radioresponse with 15 choices in an answer sheet with 10 choices
+                per line would have count = 2.
+
+       maxquest     - the number of the last bubble line that was parsed
+
+       (<number> starts at 1)
+       <number>.answer - zero or more letters representing the selected
+                         letters from the scanline for the bubble line 
+                         <number>.
+                         if blank there was either no bubble or there where
+                         multiple bubbles, (consult the keys missingerror and
+                         doubleerror if this is an error condition)
+
+=cut
+
+sub scantron_parse_scanline {
+    my ($line,$whichline,$scantron_config,$scan_data,$just_header)=@_;
+    my %record;
+    my $questions=substr($line,$$scantron_config{'Qstart'}-1);  # Answers
+    my $data=substr($line,0,$$scantron_config{'Qstart'}-1);     # earlier stuff
+    if (!($$scantron_config{'CODElocation'} eq 0 ||
+	  $$scantron_config{'CODElocation'} eq 'none')) {
+	if ($$scantron_config{'CODElocation'} < 0 ||
+	    $$scantron_config{'CODElocation'} eq 'letter' ||
+	    $$scantron_config{'CODElocation'} eq 'number') {
+	    $record{'scantron.CODE'}=substr($data,
+					    $$scantron_config{'CODEstart'}-1,
+					    $$scantron_config{'CODElength'});
+	    if (&scan_data($scan_data,"$whichline.useCODE")) {
+		$record{'scantron.useCODE'}=1;
+	    }
+	    if (&scan_data($scan_data,"$whichline.CODE_ignore_dup")) {
+		$record{'scantron.CODE_ignore_dup'}=1;
+	    }
+	} else {
+	    #FIXME interpret first N questions
+	}
+    }
+    $record{'scantron.ID'}=substr($data,$$scantron_config{'IDstart'}-1,
+				  $$scantron_config{'IDlength'});
+    $record{'scantron.PaperID'}=
+	substr($data,$$scantron_config{'PaperID'}-1,
+	       $$scantron_config{'PaperIDlength'});
+    $record{'scantron.FirstName'}=
+	substr($data,$$scantron_config{'FirstName'}-1,
+	       $$scantron_config{'FirstNamelength'});
+    $record{'scantron.LastName'}=
+	substr($data,$$scantron_config{'LastName'}-1,
+	       $$scantron_config{'LastNamelength'});
+    if ($just_header) { return \%record; }
+
+    my @alphabet=('A'..'Z');
+    my $questnum=0;
+    my $ansnum  =1;		# Multiple 'answer lines'/question.
+
+    while ($questions) {
+	my $answers_needed = $bubble_lines_per_response{$questnum};
+	my $answer_length  = $$scantron_config{'Qlength'} * $answers_needed;
+
+
+
+	$questnum++;
+	my $currentquest = substr($questions,0,$answer_length);
+	$questions       = substr($questions,0,$answer_length)='';
+	if (length($currentquest) < $answer_length) { next; }
+
+	# Qon letter implies for each slot in currentquest we have:
+	#    ? or * for doubles a letter in A-Z for a bubble and
+        #    about anything else (esp. a value of Qoff for missing
+	#    bubbles.
+
+
+	if ($$scantron_config{'Qon'} eq 'letter') {
+
+	    if ($currentquest =~ /\?/
+		|| $currentquest =~ /\*/
+		|| (&occurence_count($currentquest, "[A-Z]") > 1)) {
+		push(@{$record{'scantron.doubleerror'}},$questnum);
+		for (my $ans = 0; $ans < $answers_needed; $ans++) { 
+		    my $bubble = substr($currentquest, $ans, 1);
+		    if ($bubble =~ /[A-Z]/ ) {
+			$record{"scantron.$ansnum.answer"} = $bubble;
+		    } else {
+			$record{"scantron.$ansnum.answer"}='';
+		    }
+		    $ansnum++;
+		}
+
+	    } elsif (!defined($currentquest)
+		     || (&occurence_count($currentquest, $$scantron_config{'Qoff'}) == length($currentquest))
+		     || (&occurence_count($currentquest, "[A-Z]") == 0)) {
+		for (my $ans = 0; $ans < $answers_needed; $ans++ ) {
+		    $record{"scantron.$ansnum.answer"}='';
+		    $ansnum++;
+
+		}
+		if (!&scan_data($scan_data,"$whichline.no_bubble.$questnum")) {
+		    push(@{$record{"scantron.missingerror"}},$questnum);
+		    $ansnum += $answers_needed;
+		}
+
+	    } else {
+		for (my $ans = 0; $ans < $answers_needed; $ans++) {
+		    $record{"scantron.$ansnum.answer"} = substr($currentquest, $ans, 1);
+		    $ansnum++;
+		}
+	    }
+
+	# Qon 'number' implies each slot gives a digit that indexes the
+	#    the bubbles filled or Qoff or a non number for unbubbled lines.
+        #    and *? for double bubbles on a line.
+	#    these answers are also stored as letters.
+
+	} elsif ($$scantron_config{'Qon'} eq 'number') {
+	    if ($currentquest =~ /\?/
+		|| $currentquest =~ /\*/
+		|| (&occurence_count($currentquest, '\d') > 1)) {
+		push(@{$record{'scantron.doubleerror'}},$questnum);
+		for (my $ans = 0; $ans < $answers_needed; $ans++) {
+		    my $bubble = substr($currentquest, $ans, 1);
+		    if ($bubble =~ /\d/) {
+			$record{"scantron.$ansnum.answer"} = $alphabet[$bubble];
+		    } else {
+			$record{"scantron.$ansnum.answer"}=' ';
+		    }
+		    $ansnum++;
+		}
+
+	    } elsif (!defined($currentquest)
+		     || (&occurence_count($currentquest,$$scantron_config{'Qoff'}) == length($currentquest)) 
+		     || (&occurence_count($currentquest, '\d') == 0)) {
+		for (my $ans = 0; $ans < $answers_needed; $ans++ ) {
+		    $record{"scantron.$ansnum.answer"}='';
+		    $ansnum++;
+
+		}
+		if (!&scan_data($scan_data,"$whichline.no_bubble.$questnum")) {
+		    push(@{$record{"scantron.missingerror"}},$questnum);
+		    $ansnum += $answers_needed;
+		}
+
+	    } else {
+		$currentquest = &digits_to_letters($currentquest);
+		for (my $ans =0; $ans < $answers_needed; $ans++) {
+		    $record{"scantron.$ansnum.answer"} = substr($currentquest, $ans, 1);
+		    $ansnum++;
+		}
+	    }
+	} else {
+
+	    # Otherwise there's a positional notation;
+	    # each bubble line requires Qlength items, and there are filled in
+	    # bubbles for each case where there 'Qon' characters.
+	    #
+
+	    my @array=split($$scantron_config{'Qon'},$currentquest,-1);
+
+	    # If the split only  giveas us one element.. the full length of the
+	    # answser string, no bubbles are filled in:
+
+	    if (length($array[0]) eq $$scantron_config{'Qlength'}*$answers_needed) {
+		for (my $ans = 0; $ans < $answers_needed; $ans++ ) {
+		    $record{"scantron.$ansnum.answer"}='';
+		    $ansnum++;
+
+		}
+		if (!&scan_data($scan_data,"$whichline.no_bubble.$questnum")) {
+		    push(@{$record{"scantron.missingerror"}},$questnum);
+		}
+	    } elsif (scalar(@array) lt 2) {
+
+		my $location      = length($array[0]);
+		my $line_num      = $location / $$scantron_config{'Qlength'};
+		my $bubble        = $alphabet[$location % $$scantron_config{'Qlength'}];
+
+		for (my $ans = 0; $ans < $answers_needed; $ans++) {
+		    if ($ans eq $line_num) {
+			$record{"scantron.$ansnum.answer"} = $bubble;
+		    } else {
+			$record{"scantron.$ansnum.answer"} = ' ';
+		    }
+		    $ansnum++;
+		}
+	    }
+	    #  If there's more than one instance of a bubble character
+	    #  That's a double bubble; with positional notation we can
+	    #  record all the bubbles filled in as well as the 
+	    #  fact this response consists of multiple bubbles.
+	    #
+	    else {
+		push(@{$record{'scantron.doubleerror'}},$questnum);
+
+		my $first_answer = $ansnum;
+		for (my $ans =0; $ans < $answers_needed; $ans++) {
+		    my $item = $first_answer+$ans;
+		    $record{"scantron.$item.answer"} = '';
+		}
+
+		my @ans=@array;
+		my $i=0;
+		my $increment = 0;
+		while ($#ans) {
+		    $i+=length($ans[0]) + $increment;
+		    my $line   = int($i/$$scantron_config{'Qlength'} + $first_answer);
+		    my $bubble = $i%$$scantron_config{'Qlength'};
+		    $record{"scantron.$line.answer"}.=$alphabet[$bubble];
+		    shift(@ans);
+		    $increment = 1;
+		}
+		$ansnum += $answers_needed;
+	    }
+	}
+    }
+    $record{'scantron.maxquest'}=$questnum;
+    return \%record;
+}
+
+=pod
+
+=item scantron_add_delay
+
+   Adds an error message that occurred during the grading phase to a
+   queue of messages to be shown after grading pass is complete
+
+ Arguments:
+   $delayqueue  - arrary ref of hash ref of error messages
+   $scanline    - the scanline that caused the error
+   $errormesage - the error message
+   $errorcode   - a numeric code for the error
+
+ Side Effects:
+   updates the $delayqueue to have a new hash ref of the error
+
+=cut
+
+sub scantron_add_delay {
+    my ($delayqueue,$scanline,$errormessage,$errorcode)=@_;
+    push(@$delayqueue,
+	 {'line' => $scanline, 'emsg' => $errormessage,
+	  'ecode' => $errorcode }
+	 );
+}
+
+=pod
+
+=item scantron_find_student
+
+   Finds the username for the current scanline
+
+  Arguments:
+   $scantron_record - hash result from scantron_parse_scanline
+   $scan_data       - hash of correction information 
+                      (see &scantron_getfile() form more information)
+   $idmap           - hash from &username_to_idmap()
+   $line            - number of current scanline
+ 
+  Returns:
+   Either 'username:domain' or undef if unknown
+
+=cut
+
+sub scantron_find_student {
+    my ($scantron_record,$scan_data,$idmap,$line)=@_;
+    my $scanID=$$scantron_record{'scantron.ID'};
+    if ($scanID =~ /^\s*$/) {
+ 	return &scan_data($scan_data,"$line.user");
+    }
+    foreach my $id (keys(%$idmap)) {
+ 	if (lc($id) eq lc($scanID)) {
+ 	    return $$idmap{$id};
+ 	}
+    }
+    return undef;
+}
+
+=pod
+
+=item scantron_filter
+
+   Filter sub for lonnavmaps, filters out hidden resources if ignore
+   hidden resources was selected
+
+=cut
+
+sub scantron_filter {
+    my ($curres)=@_;
+
+    if (ref($curres) && $curres->is_problem()) {
+	# if the user has asked to not have either hidden
+	# or 'randomout' controlled resources to be graded
+	# don't include them
+	if ($env{'form.scantron_options_hidden'} eq 'ignore_hidden'
+	    && $curres->randomout) {
+	    return 0;
+	}
+	return 1;
+    }
+    return 0;
+}
+
+=pod
+
+=item scantron_process_corrections
+
+   Gets correction information out of submitted form data and corrects
+   the scanline
+
+=cut
+
+sub scantron_process_corrections {
+    my ($r) = @_;
+    my %scantron_config=&get_scantron_config($env{'form.scantron_format'});
+    my ($scanlines,$scan_data)=&scantron_getfile();
+    my $classlist=&Apache::loncoursedata::get_classlist();
+    my $which=$env{'form.scantron_line'};
+    my $line=&scantron_get_line($scanlines,$scan_data,$which);
+    my ($skip,$err,$errmsg);
+    if ($env{'form.scantron_skip_record'}) {
+	$skip=1;
+    } elsif ($env{'form.scantron_corrections'} =~ /^(duplicate|incorrect)ID$/) {
+	my $newstudent=$env{'form.scantron_username'}.':'.
+	    $env{'form.scantron_domain'};
+	my $newid=$classlist->{$newstudent}->[&Apache::loncoursedata::CL_ID];
+	($line,$err,$errmsg)=
+	    &scantron_fixup_scanline(\%scantron_config,$scan_data,$line,$which,
+				     'ID',{'newid'=>$newid,
+				    'username'=>$env{'form.scantron_username'},
+				    'domain'=>$env{'form.scantron_domain'}});
+    } elsif ($env{'form.scantron_corrections'} =~ /^(duplicate|incorrect)CODE$/) {
+	my $resolution=$env{'form.scantron_CODE_resolution'};
+	my $newCODE;
+	my %args;
+	if      ($resolution eq 'use_unfound') {
+	    $newCODE='use_unfound';
+	} elsif ($resolution eq 'use_found') {
+	    $newCODE=$env{'form.scantron_CODE_selectedvalue'};
+	} elsif ($resolution eq 'use_typed') {
+	    $newCODE=$env{'form.scantron_CODE_newvalue'};
+	} elsif ($resolution =~ /^use_closest_(\d+)/) {
+	    $newCODE=$env{"form.scantron_CODE_closest_$1"};
+	}
+	if ($env{'form.scantron_corrections'} eq 'duplicateCODE') {
+	    $args{'CODE_ignore_dup'}=1;
+	}
+	$args{'CODE'}=$newCODE;
+	($line,$err,$errmsg)=
+	    &scantron_fixup_scanline(\%scantron_config,$scan_data,$line,$which,
+				     'CODE',\%args);
+    } elsif ($env{'form.scantron_corrections'} =~ /^(missing|double)bubble$/) {
+	foreach my $question (split(',',$env{'form.scantron_questions'})) {
+	    ($line,$err,$errmsg)=
+		&scantron_fixup_scanline(\%scantron_config,$scan_data,$line,
+					 $which,'answer',
+					 { 'question'=>$question,
+		       'response'=>$env{"form.scantron_correct_Q_$question"}});
+	    if ($err) { last; }
+	}
+    }
+    if ($err) {
+	$r->print("<span class=\"LC_warning\">Unable to accept last correction, an error occurred :$errmsg:</span>");
+    } else {
+	&scantron_put_line($scanlines,$scan_data,$which,$line,$skip);
+	&scantron_putfile($scanlines,$scan_data);
+    }
+}
+
+=pod
+
+=item reset_skipping_status
+
+   Forgets the current set of remember skipped scanlines (and thus
+   reverts back to considering all lines in the
+   scantron_skipped_<filename> file)
+
+=cut
+
+sub reset_skipping_status {
+    my ($scanlines,$scan_data)=&scantron_getfile();
+    &scan_data($scan_data,'remember_skipping',undef,1);
+    &scantron_putfile(undef,$scan_data);
+}
+
+=pod
+
+=item start_skipping
+
+   Marks a scanline to be skipped. 
+
+=cut
+
+sub start_skipping {
+    my ($scan_data,$i)=@_;
+    my %remembered=split(':',&scan_data($scan_data,'remember_skipping'));
+    if ($env{'form.scantron_options_redo'} =~ /^redo_/) {
+	$remembered{$i}=2;
+    } else {
+	$remembered{$i}=1;
+    }
+    &scan_data($scan_data,'remember_skipping',join(':',%remembered));
+}
+
+=pod
+
+=item should_be_skipped
+
+   Checks whether a scanline should be skipped.
+
+=cut
+
+sub should_be_skipped {
+    my ($scanlines,$scan_data,$i)=@_;
+    if ($env{'form.scantron_options_redo'} !~ /^redo_/) {
+	# not redoing old skips
+	if ($scanlines->{'skipped'}[$i]) { return 1; }
+	return 0;
+    }
+    my %remembered=split(':',&scan_data($scan_data,'remember_skipping'));
+
+    if (exists($remembered{$i}) && $remembered{$i} != 2 ) {
+	return 0;
+    }
+    return 1;
+}
+
+=pod
+
+=item remember_current_skipped
+
+   Discovers what scanlines are in the scantron_skipped_<filename>
+   file and remembers them into scan_data for later use.
+
+=cut
+
+sub remember_current_skipped {
+    my ($scanlines,$scan_data)=&scantron_getfile();
+    my %to_remember;
+    for (my $i=0;$i<=$scanlines->{'count'};$i++) {
+	if ($scanlines->{'skipped'}[$i]) {
+	    $to_remember{$i}=1;
+	}
+    }
+
+    &scan_data($scan_data,'remember_skipping',join(':',%to_remember));
+    &scantron_putfile(undef,$scan_data);
+}
+
+=pod
+
+=item check_for_error
+
+    Checks if there was an error when attempting to remove a specific
+    scantron_.. bubble sheet data file. Prints out an error if
+    something went wrong.
+
+=cut
+
+sub check_for_error {
+    my ($r,$result)=@_;
+    if ($result ne 'ok' && $result ne 'not_found' ) {
+	$r->print("An error occurred ($result) when trying to Remove the existing corrections.");
+    }
+}
+
+=pod
+
+=item scantron_warning_screen
+
+   Interstitial screen to make sure the operator has selected the
+   correct options before we start the validation phase.
+
+=cut
+
+sub scantron_warning_screen {
+    my ($button_text)=@_;
+    my $title=&Apache::lonnet::gettitle($env{'form.selectpage'});
+    my %scantron_config=&get_scantron_config($env{'form.scantron_format'});
+    my $CODElist;
+    if ($scantron_config{'CODElocation'} &&
+	$scantron_config{'CODEstart'} &&
+	$scantron_config{'CODElength'}) {
+	$CODElist=$env{'form.scantron_CODElist'};
+	if ($env{'form.scantron_CODElist'} eq '') { $CODElist='<span class="LC_warning">None</span>'; }
+	$CODElist=
+	    '<tr><td><b>List of CODES to validate against:</b></td><td><tt>'.
+	    $env{'form.scantron_CODElist'}.'</tt></td></tr>';
+    }
+    return (<<STUFF);
+<p>
+<span class="LC_warning">Please double check the information
+                 below before clicking on '$button_text'</span>
+</p>
+<table>
+<tr><td><b>Sequence to be Graded:</b></td><td>$title</td></tr>
+<tr><td><b>Data File that will be used:</b></td><td><tt>$env{'form.scantron_selectfile'}</tt></td></tr>
+$CODElist
+</table>
+<br />
+<p> If this information is correct, please click on '$button_text'.</p>
+<p> If something is incorrect, please click the 'Grading Menu' button to start over.</p>
+
+<br />
+STUFF
+}
+
+=pod
+
+=item scantron_do_warning
+
+   Check if the operator has picked something for all required
+   fields. Error out if something is missing.
+
+=cut
+
+sub scantron_do_warning {
+    my ($r)=@_;
+    my ($symb)=&get_symb($r);
+    if (!$symb) {return '';}
+    my $default_form_data=&defaultFormData($symb);
+    $r->print(&scantron_form_start().$default_form_data);
+    if ( $env{'form.selectpage'} eq '' ||
+	 $env{'form.scantron_selectfile'} eq '' ||
+	 $env{'form.scantron_format'} eq '' ) {
+	$r->print("<p>You have forgetten to specify some information. Please go Back and try again.</p>");
+	if ( $env{'form.selectpage'} eq '') {
+	    $r->print('<p><span class="LC_error">You have not selected a Sequence to grade</span></p>');
+	} 
+	if ( $env{'form.scantron_selectfile'} eq '') {
+	    $r->print('<p><span class="LC_error">You have not selected a file that contains the student\'s response data.</span></p>');
+	} 
+	if ( $env{'form.scantron_format'} eq '') {
+	    $r->print('<p><span class="LC_error">You have not selected a the format of the student\'s response data.</span></p>');
+	} 
+    } else {
+	my $warning=&scantron_warning_screen('Grading: Validate Records');
+	$r->print(<<STUFF);
+$warning
+<input type="submit" name="submit" value="Grading: Validate Records" />
+<input type="hidden" name="command" value="scantron_validate" />
+STUFF
+    }
+    $r->print("</form><br />".&show_grading_menu_form($symb));
+    return '';
+}
+
+=pod
+
+=item scantron_form_start
+
+    html hidden input for remembering all selected grading options
+
+=cut
+
+sub scantron_form_start {
+    my ($max_bubble)=@_;
+    my $result= <<SCANTRONFORM;
+<form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantronupload">
+  <input type="hidden" name="selectpage" value="$env{'form.selectpage'}" />
+  <input type="hidden" name="scantron_format" value="$env{'form.scantron_format'}" />
+  <input type="hidden" name="scantron_selectfile" value="$env{'form.scantron_selectfile'}" />
+  <input type="hidden" name="scantron_maxbubble" value="$max_bubble" />
+  <input type="hidden" name="scantron_CODElist" value="$env{'form.scantron_CODElist'}" />
+  <input type="hidden" name="scantron_CODEunique" value="$env{'form.scantron_CODEunique'}" />
+  <input type="hidden" name="scantron_options_redo" value="$env{'form.scantron_options_redo'}" />
+  <input type="hidden" name="scantron_options_ignore" value="$env{'form.scantron_options_ignore'}" />
+  <input type="hidden" name="scantron_options_hidden" value="$env{'form.scantron_options_hidden'}" />
+SCANTRONFORM
+
+  my $line = 0;
+    while (defined($env{"form.scantron.bubblelines.$line"})) {
+       my $chunk =
+	   '<input type="hidden" name="scantron.bubblelines.'.$line.'" value="'.$env{"form.scantron.bubblelines.$line"}.'" />'."\n";
+       $chunk .=
+	   '<input type="hidden" name="scantron.first_bubble_line.'.$line.'" value="'.$env{"form.scantron.first_bubble_line.$line"}.'" />'."\n";
+       $result .= $chunk;
+       $line++;
    }
-  $result.="</tr>";
-  #get info for each student
-  foreach my $student ( sort(@{ $classlist{'allids'} }) ) {
-    $result.=&viewstudentgrade($url,$symb,$ENV{'request.course.id'},$student,@parts);
-  }
-  $result.='</table></td></tr></table><input type="submit" name="submit" value="Submit Changes" /></form>';
+    return $result;
+}
+
+=pod
+
+=item scantron_validate_file
+
+    Dispatch routine for doing validation of a bubble sheet data file.
+
+    Also processes any necessary information resets that need to
+    occur before validation begins (ignore previous corrections,
+    restarting the skipped records processing)
+
+=cut
+
+sub scantron_validate_file {
+    my ($r) = @_;
+    my ($symb)=&get_symb($r);
+    if (!$symb) {return '';}
+    my $default_form_data=&defaultFormData($symb);
+    
+    # do the detection of only doing skipped records first befroe we delete
+    # them when doing the corrections reset
+    if ($env{'form.scantron_options_redo'} ne 'redo_skipped_ready') {
+	&reset_skipping_status();
+    }
+    if ($env{'form.scantron_options_redo'} eq 'redo_skipped') {
+	&remember_current_skipped();
+	$env{'form.scantron_options_redo'}='redo_skipped_ready';
+    }
+
+    if ($env{'form.scantron_options_ignore'} eq 'ignore_corrections') {
+	&check_for_error($r,&scantron_remove_file('corrected'));
+	&check_for_error($r,&scantron_remove_file('skipped'));
+	&check_for_error($r,&scantron_remove_scan_data());
+	$env{'form.scantron_options_ignore'}='done';
+    }
+
+    if ($env{'form.scantron_corrections'}) {
+	&scantron_process_corrections($r);
+    }
+    $r->print("<p>Gathering necessary info.</p>");$r->rflush();
+    #get the student pick code ready
+    $r->print(&Apache::loncommon::studentbrowser_javascript());
+    my $max_bubble=&scantron_get_maxbubble();
+    my $result=&scantron_form_start($max_bubble).$default_form_data;
+    $r->print($result);
+    
+    my @validate_phases=( 'sequence',
+			  'ID',
+			  'CODE',
+			  'doublebubble',
+			  'missingbubbles');
+    if (!$env{'form.validatepass'}) {
+	$env{'form.validatepass'} = 0;
+    }
+    my $currentphase=$env{'form.validatepass'};
+
 
-  return $result;
+    my $stop=0;
+    while (!$stop && $currentphase < scalar(@validate_phases)) {
+	$r->print("<p> Validating ".$validate_phases[$currentphase]."</p>");
+	$r->rflush();
+	my $which="scantron_validate_".$validate_phases[$currentphase];
+	{
+	    no strict 'refs';
+	    ($stop,$currentphase)=&$which($r,$currentphase);
+	}
+    }
+    if (!$stop) {
+	my $warning=&scantron_warning_screen('Start Grading');
+	$r->print(<<STUFF);
+Validation process complete.<br />
+$warning
+<input type="submit" name="submit" value="Start Grading" />
+<input type="hidden" name="command" value="scantron_process" />
+STUFF
+
+    } else {
+	$r->print('<input type="hidden" name="command" value="scantron_validate" />');
+	$r->print("<input type='hidden' name='validatepass' value='".$currentphase."' />");
+    }
+    if ($stop) {
+	if ($validate_phases[$currentphase] eq 'sequence') {
+	    $r->print('<input type="submit" name="submit" value="Ignore -> " />');
+	    $r->print(' this error <br />');
+
+	    $r->print(" <p>Or click the 'Grading Menu' button to start over.</p>");
+	} else {
+	    $r->print('<input type="submit" name="submit" value="Continue ->" />');
+	    $r->print(' using corrected info <br />');
+	    $r->print("<input type='submit' value='Skip' name='scantron_skip_record' />");
+	    $r->print(" this scanline saving it for later.");
+	}
+    }
+    $r->print(" </form><br />".&show_grading_menu_form($symb));
+    return '';
 }
 
-sub editgrades {
-  my ($request) = @_;
-  my $result='';
 
-  my $symb=$ENV{'form.symb'};
-  if ($symb eq '') { $request->print("Unable to handle ambiguous references:$symb:$ENV{'form.url'}"); return ''; }
-  my $url=$ENV{'form.url'};
-  #get classlist
-  my ($cdom,$cnum) = split(/_/,$ENV{'request.course.id'});
-  my $chome=$ENV{"course.$ENV{'request.course.id'}.home"};
-  #print "Found $cdom:$cnum:$chome<br />";
-  my (%classlist) = &getclasslist($cdom,$cnum,$chome,'0');
-
-  #get list of parts for this problem
-  my (@parts) = &getpartlist($url);
-
-  $result.='<form action="/adm/grades" method="post">'."\n".
-    '<input type="hidden" name="symb" value="'.$symb.'" />'."\n".
-      '<input type="hidden" name="url" value="'.$url.'" />'."\n".
-	'<input type="hidden" name="command" value="viewgrades" />'."\n".
-	  '<input type="submit" name="submit" value="See Grades" /> <br />'."\n";
-
-  foreach my $student ( sort(@{ $classlist{'allids'} }) ) {
-    $result.=&setstudentgrade($url,$symb,$ENV{'request.course.id'},$student,@parts);
-  }
-
-  $result.='<input type="submit" name="submit" value="See Grades" /></table></form>';
-  return $result;
-}
-
-sub send_header {
-  my ($request)= @_;
-  $request->print(&Apache::lontexconvert::header());
-#  $request->print("
-#<script>
-#remotewindow=open('','homeworkremote');
-#remotewindow.close();
-#</script>"); 
-  $request->print('<body bgcolor="#FFFFFF">');
-}
-
-sub send_footer {
-  my ($request)= @_;
-  $request->print('</body>');
-  $request->print(&Apache::lontexconvert::footer());
+=pod
+
+=item scantron_remove_file
+
+   Removes the requested bubble sheet data file, makes sure that
+   scantron_original_<filename> is never removed
+
+
+=cut
+
+sub scantron_remove_file {
+    my ($which)=@_;
+    my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
+    my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
+    my $file='scantron_';
+    if ($which eq 'corrected' || $which eq 'skipped') {
+	$file.=$which.'_';
+    } else {
+	return 'refused';
+    }
+    $file.=$env{'form.scantron_selectfile'};
+    return &Apache::lonnet::removeuserfile($cname,$cdom,$file);
 }
 
-sub handler {
-  my $request=$_[0];
 
-  if ( $ENV{'user.name'} eq 'albertel' ) {$Apache::lonxml::debug=1;} else {$Apache::lonxml::debug=0;}
+=pod
+
+=item scantron_remove_scan_data
+
+   Removes all scan_data correction for the requested bubble sheet
+   data file.  (In the case that both the are doing skipped records we need
+   to remember the old skipped lines for the time being so that element
+   persists for a while.)
+
+=cut
+
+sub scantron_remove_scan_data {
+    my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
+    my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
+    my @keys=&Apache::lonnet::getkeys('nohist_scantrondata',$cdom,$cname);
+    my @todelete;
+    my $filename=$env{'form.scantron_selectfile'};
+    foreach my $key (@keys) {
+	if ($key=~/^\Q$filename\E_/) {
+	    if ($env{'form.scantron_options_redo'} eq 'redo_skipped_ready' &&
+		$key=~/remember_skipping/) {
+		next;
+	    }
+	    push(@todelete,$key);
+	}
+    }
+    my $result;
+    if (@todelete) {
+	$result=&Apache::lonnet::del('nohist_scantrondata',\@todelete,$cdom,$cname);
+    }
+    return $result;
+}
+
+
+=pod
+
+=item scantron_getfile
+
+    Fetches the requested bubble sheet data file (all 3 versions), and
+    the scan_data hash
   
-  if ($ENV{'browser.mathml'}) {
-    $request->content_type('text/xml');
-  } else {
-    $request->content_type('text/html');
-  }
-  $request->send_http_header;
-  return OK if $request->header_only;
-  &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
-  my $url=$ENV{'form.url'};
-  my $symb=$ENV{'form.symb'};
-  my $command=$ENV{'form.command'};
-  if (!$url) {
-    my ($temp1,$temp2);
-    ($temp1,$temp2,$ENV{'form.url'})=split(/___/,$symb);
-    $url = $ENV{'form.url'};
-  }
-  &send_header($request);
-  if ($url eq '' && $symb eq '') {
-     if ($ENV{'user.adv'}) {
-         if (($ENV{'form.codeone'}) && ($ENV{'form.codetwo'}) &&
-             ($ENV{'form.codethree'})) {
-             my $token=$ENV{'form.codeone'}.'*'.$ENV{'form.codetwo'}.'*'.
-		        $ENV{'form.codethree'};
-             my ($tsymb,$tuname,$tudom,$tcrsid)=
-		 &Apache::lonnet::checkin($token);
-             if ($tsymb) {
-                my ($map,$id,$url)=split(/\_\_\_/,$tsymb);
-                if (&Apache::lonnet::allowed('mgr',$tcrsid)) {
-                   $request->print(
-                     &Apache::lonnet::ssi('/res/'.$url,
-                        ('grade_username' => $tuname,
-                         'grade_domain' => $tudom,
-                         'grade_courseid' => $tcrsid,
-                         'grade_symb' => $tsymb)));
-                } else {
-                   $request->print('<h1>Not authorized: '.$token.'</h1>');
-                }           
+  Arguments:
+    None
+
+  Returns:
+    2 hash references
+
+     - first one has 
+         orig      -
+         corrected -
+         skipped   -  each of which points to an array ref of the specified
+                      file broken up into individual lines
+         count     - number of scanlines
+ 
+     - second is the scan_data hash possible keys are
+       ($number refers to scanline numbered $number and thus the key affects
+        only that scanline
+        $bubline refers to the specific bubble line element and the aspects
+        refers to that specific bubble line element)
+
+       $number.user - username:domain to use
+       $number.CODE_ignore_dup 
+                    - ignore the duplicate CODE error 
+       $number.useCODE
+                    - use the CODE in the scanline as is
+       $number.no_bubble.$bubline
+                    - it is valid that there is no bubbled in bubble
+                      at $number $bubline
+       remember_skipping
+                    - a frozen hash containing keys of $number and values
+                      of either 
+                        1 - we are on a 'do skipped records pass' and plan
+                            on processing this line
+                        2 - we are on a 'do skipped records pass' and this
+                            scanline has been marked to skip yet again
+
+=cut
+
+sub scantron_getfile {
+    #FIXME really would prefer a scantron directory
+    my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
+    my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
+    my $lines;
+    $lines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.
+		       'scantron_orig_'.$env{'form.scantron_selectfile'});
+    my %scanlines;
+    $scanlines{'orig'}=[(split("\n",$lines,-1))];
+    my $temp=$scanlines{'orig'};
+    $scanlines{'count'}=$#$temp;
+
+    $lines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.
+		       'scantron_corrected_'.$env{'form.scantron_selectfile'});
+    if ($lines eq '-1') {
+	$scanlines{'corrected'}=[];
+    } else {
+	$scanlines{'corrected'}=[(split("\n",$lines,-1))];
+    }
+    $lines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.
+		       'scantron_skipped_'.$env{'form.scantron_selectfile'});
+    if ($lines eq '-1') {
+	$scanlines{'skipped'}=[];
+    } else {
+	$scanlines{'skipped'}=[(split("\n",$lines,-1))];
+    }
+    my @tmp=&Apache::lonnet::dump('nohist_scantrondata',$cdom,$cname);
+    if ($tmp[0] =~ /^(error:|no_such_host)/) { @tmp=(); }
+    my %scan_data = @tmp;
+    return (\%scanlines,\%scan_data);
+}
+
+=pod
+
+=item lonnet_putfile
+
+   Wrapper routine to call &Apache::lonnet::finishuserfileupload
+
+ Arguments:
+   $contents - data to store
+   $filename - filename to store $contents into
+
+ Returns:
+   result value from &Apache::lonnet::finishuserfileupload
+
+=cut
+
+sub lonnet_putfile {
+    my ($contents,$filename)=@_;
+    my $docuname=$env{'course.'.$env{'request.course.id'}.'.num'};
+    my $docudom=$env{'course.'.$env{'request.course.id'}.'.domain'};
+    $env{'form.sillywaytopassafilearound'}=$contents;
+    &Apache::lonnet::finishuserfileupload($docuname,$docudom,'sillywaytopassafilearound',$filename);
+
+}
+
+=pod
+
+=item scantron_putfile
+
+    Stores the current version of the bubble sheet data files, and the
+    scan_data hash. (Does not modify the original version only the
+    corrected and skipped versions.
+
+ Arguments:
+    $scanlines - hash ref that looks like the first return value from
+                 &scantron_getfile()
+    $scan_data - hash ref that looks like the second return value from
+                 &scantron_getfile()
+
+=cut
+
+sub scantron_putfile {
+    my ($scanlines,$scan_data) = @_;
+    #FIXME really would prefer a scantron directory
+    my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
+    my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
+    if ($scanlines) {
+	my $prefix='scantron_';
+# no need to update orig, shouldn't change
+#   &lonnet_putfile(join("\n",@{$scanlines->{'orig'}}),$prefix.'orig_'.
+#		    $env{'form.scantron_selectfile'});
+	&lonnet_putfile(join("\n",@{$scanlines->{'corrected'}}),
+			$prefix.'corrected_'.
+			$env{'form.scantron_selectfile'});
+	&lonnet_putfile(join("\n",@{$scanlines->{'skipped'}}),
+			$prefix.'skipped_'.
+			$env{'form.scantron_selectfile'});
+    }
+    &Apache::lonnet::put('nohist_scantrondata',$scan_data,$cdom,$cname);
+}
+
+=pod
+
+=item scantron_get_line
+
+   Returns the correct version of the scanline
+
+ Arguments:
+    $scanlines - hash ref that looks like the first return value from
+                 &scantron_getfile()
+    $scan_data - hash ref that looks like the second return value from
+                 &scantron_getfile()
+    $i         - number of the requested line (starts at 0)
+
+ Returns:
+   A scanline, (either the original or the corrected one if it
+   exists), or undef if the requested scanline should be
+   skipped. (Either because it's an skipped scanline, or it's an
+   unskipped scanline and we are not doing a 'do skipped scanlines'
+   pass.
+
+=cut
+
+sub scantron_get_line {
+    my ($scanlines,$scan_data,$i)=@_;
+    if (&should_be_skipped($scanlines,$scan_data,$i)) { return undef; }
+    #if ($scanlines->{'skipped'}[$i]) { return undef; }
+    if ($scanlines->{'corrected'}[$i]) {return $scanlines->{'corrected'}[$i];}
+    return $scanlines->{'orig'}[$i]; 
+}
+
+=pod
+
+=item scantron_todo_count
+
+    Counts the number of scanlines that need processing.
+
+ Arguments:
+    $scanlines - hash ref that looks like the first return value from
+                 &scantron_getfile()
+    $scan_data - hash ref that looks like the second return value from
+                 &scantron_getfile()
+
+ Returns:
+    $count - number of scanlines to process
+
+=cut
+
+sub get_todo_count {
+    my ($scanlines,$scan_data)=@_;
+    my $count=0;
+    for (my $i=0;$i<=$scanlines->{'count'};$i++) {
+	my $line=&scantron_get_line($scanlines,$scan_data,$i);
+	if ($line=~/^[\s\cz]*$/) { next; }
+	$count++;
+    }
+    return $count;
+}
+
+=pod
+
+=item scantron_put_line
+
+    Updates the 'corrected' or 'skipped' versions of the bubble sheet
+    data file.
+
+ Arguments:
+    $scanlines - hash ref that looks like the first return value from
+                 &scantron_getfile()
+    $scan_data - hash ref that looks like the second return value from
+                 &scantron_getfile()
+    $i         - line number to update
+    $newline   - contents of the updated scanline
+    $skip      - if true make the line for skipping and update the
+                 'skipped' file
+
+=cut
+
+sub scantron_put_line {
+    my ($scanlines,$scan_data,$i,$newline,$skip)=@_;
+    if ($skip) {
+	$scanlines->{'skipped'}[$i]=$newline;
+	&start_skipping($scan_data,$i);
+	return;
+    }
+    $scanlines->{'corrected'}[$i]=$newline;
+}
+
+=pod
+
+=item scantron_clear_skip
+
+   Remove a line from the 'skipped' file
+
+ Arguments:
+    $scanlines - hash ref that looks like the first return value from
+                 &scantron_getfile()
+    $scan_data - hash ref that looks like the second return value from
+                 &scantron_getfile()
+    $i         - line number to update
+
+=cut
+
+sub scantron_clear_skip {
+    my ($scanlines,$scan_data,$i)=@_;
+    if (exists($scanlines->{'skipped'}[$i])) {
+	undef($scanlines->{'skipped'}[$i]);
+	return 1;
+    }
+    return 0;
+}
+
+=pod
+
+=item scantron_filter_not_exam
+
+   Filter routine used by &Apache::lonnavmaps::retrieveResources(), to
+   filter out resources that are not marked as 'exam' mode
+
+=cut
+
+sub scantron_filter_not_exam {
+    my ($curres)=@_;
+    
+    if (ref($curres) && $curres->is_problem() && !$curres->is_exam()) {
+	# if the user has asked to not have either hidden
+	# or 'randomout' controlled resources to be graded
+	# don't include them
+	if ($env{'form.scantron_options_hidden'} eq 'ignore_hidden'
+	    && $curres->randomout) {
+	    return 0;
+	}
+	return 1;
+    }
+    return 0;
+}
+
+=pod
+
+=item scantron_validate_sequence
+
+    Validates the selected sequence, checking for resource that are
+    not set to exam mode.
+
+=cut
+
+sub scantron_validate_sequence {
+    my ($r,$currentphase) = @_;
+
+    my $navmap=Apache::lonnavmaps::navmap->new();
+    my (undef,undef,$sequence)=
+	&Apache::lonnet::decode_symb($env{'form.selectpage'});
+
+    my $map=$navmap->getResourceByUrl($sequence);
+
+    $r->print('<input type="hidden" name="validate_sequence_exam"
+                                    value="ignore" />');
+    if ($env{'form.validate_sequence_exam'} ne 'ignore') {
+	my @resources=
+	    $navmap->retrieveResources($map,\&scantron_filter_not_exam,1,0);
+	if (@resources) {
+	    $r->print("<p>".&mt('Some resources in the sequence currently are not set to exam mode. Grading these resources currently may not work correctly.')."</p>");
+	    return (1,$currentphase);
+	}
+    }
+
+    return (0,$currentphase+1);
+}
+
+=pod
+
+=item scantron_validate_ID
+
+   Validates all scanlines in the selected file to not have any
+   invalid or underspecified student IDs
+
+=cut
+
+sub scantron_validate_ID {
+    my ($r,$currentphase) = @_;
+    
+    #get student info
+    my $classlist=&Apache::loncoursedata::get_classlist();
+    my %idmap=&username_to_idmap($classlist);
+
+    #get scantron line setup
+    my %scantron_config=&get_scantron_config($env{'form.scantron_format'});
+    my ($scanlines,$scan_data)=&scantron_getfile();
+    
+    &scantron_get_maxbubble();	# parse needs the bubble_lines.. array.
+
+    my %found=('ids'=>{},'usernames'=>{});
+    for (my $i=0;$i<=$scanlines->{'count'};$i++) {
+	my $line=&scantron_get_line($scanlines,$scan_data,$i);
+	if ($line=~/^[\s\cz]*$/) { next; }
+	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
+						 $scan_data);
+	my $id=$$scan_record{'scantron.ID'};
+	my $found;
+	foreach my $checkid (keys(%idmap)) {
+	    if (lc($checkid) eq lc($id)) { $found=$checkid;last; }
+	}
+	if ($found) {
+	    my $username=$idmap{$found};
+	    if ($found{'ids'}{$found}) {
+		&scantron_get_correction($r,$i,$scan_record,\%scantron_config,
+					 $line,'duplicateID',$found);
+		return(1,$currentphase);
+	    } elsif ($found{'usernames'}{$username}) {
+		&scantron_get_correction($r,$i,$scan_record,\%scantron_config,
+					 $line,'duplicateID',$username);
+		return(1,$currentphase);
+	    }
+	    #FIXME store away line we previously saw the ID on to use above
+	    $found{'ids'}{$found}++;
+	    $found{'usernames'}{$username}++;
+	} else {
+	    if ($id =~ /^\s*$/) {
+		my $username=&scan_data($scan_data,"$i.user");
+		if (defined($username) && $found{'usernames'}{$username}) {
+		    &scantron_get_correction($r,$i,$scan_record,
+					     \%scantron_config,
+					     $line,'duplicateID',$username);
+		    return(1,$currentphase);
+		} elsif (!defined($username)) {
+		    &scantron_get_correction($r,$i,$scan_record,
+					     \%scantron_config,
+					     $line,'incorrectID');
+		    return(1,$currentphase);
+		}
+		$found{'usernames'}{$username}++;
 	    } else {
-                $request->print('<h1>Not a valid DocID: '.$token.'</h1>');
+		&scantron_get_correction($r,$i,$scan_record,\%scantron_config,
+					 $line,'incorrectID');
+		return(1,$currentphase);
+	    }
+	}
+    }
+
+    return (0,$currentphase+1);
+}
+
+=pod
+
+=item scantron_get_correction
+
+   Builds the interface screen to interact with the operator to fix a
+   specific error condition in a specific scanline
+
+ Arguments:
+    $r           - Apache request object
+    $i           - number of the current scanline
+    $scan_record - hash ref as returned from &scantron_parse_scanline()
+    $scan_config - hash ref as returned from &get_scantron_config()
+    $line        - full contents of the current scanline
+    $error       - error condition, valid values are
+                   'incorrectCODE', 'duplicateCODE',
+                   'doublebubble', 'missingbubble',
+                   'duplicateID', 'incorrectID'
+    $arg         - extra information needed
+       For errors:
+         - duplicateID   - paper number that this studentID was seen before on
+         - duplicateCODE - array ref of the paper numbers this CODE was
+                           seen on before
+         - incorrectCODE - current incorrect CODE 
+         - doublebubble  - array ref of the bubble lines that have double
+                           bubble errors
+         - missingbubble - array ref of the bubble lines that have missing
+                           bubble errors
+
+=cut
+
+sub scantron_get_correction {
+    my ($r,$i,$scan_record,$scan_config,$line,$error,$arg)=@_;
+
+#FIXME in the case of a duplicated ID the previous line, probably need
+#to show both the current line and the previous one and allow skipping
+#the previous one or the current one
+
+    $r->print("<p><b>An error was detected ($error)</b>");
+    if ( $$scan_record{'scantron.PaperID'} =~ /\S/) {
+	$r->print(" for PaperID <tt>".
+		  $$scan_record{'scantron.PaperID'}."</tt> \n");
+    } else {
+	$r->print(" in scanline $i <pre>".
+		  $line."</pre> \n");
+    }
+    my $message="<p>The ID on the form is  <tt>".
+	$$scan_record{'scantron.ID'}."</tt><br />\n".
+	"The name on the paper is ".
+	$$scan_record{'scantron.LastName'}.",".
+	$$scan_record{'scantron.FirstName'}."</p>";
+
+    $r->print('<input type="hidden" name="scantron_corrections" value="'.$error.'" />'."\n");
+    $r->print('<input type="hidden" name="scantron_line" value="'.$i.'" />'."\n");
+    if ($error =~ /ID$/) {
+	if ($error eq 'incorrectID') {
+	    $r->print("The encoded ID is not in the classlist</p>\n");
+	} elsif ($error eq 'duplicateID') {
+	    $r->print("The encoded ID has also been used by a previous paper $arg</p>\n");
+	}
+	$r->print($message);
+	$r->print("<p>How should I handle this? <br /> \n");
+	$r->print("\n<ul><li> ");
+	#FIXME it would be nice if this sent back the user ID and
+	#could do partial userID matches
+	$r->print(&Apache::loncommon::selectstudent_link('scantronupload',
+				       'scantron_username','scantron_domain'));
+	$r->print(": <input type='text' name='scantron_username' value='' />");
+	$r->print("\n@".
+		 &Apache::loncommon::select_dom_form($env{'request.role.domain'},'scantron_domain'));
+
+	$r->print('</li>');
+    } elsif ($error =~ /CODE$/) {
+	if ($error eq 'incorrectCODE') {
+	    $r->print("</p><p>The encoded CODE is not in the list of possible CODEs</p>\n");
+	} elsif ($error eq 'duplicateCODE') {
+	    $r->print("</p><p>The encoded CODE has also been used by a previous paper ".join(', ',@{$arg}).", and CODEs are supposed to be unique</p>\n");
+	}
+	$r->print("<p>The CODE on the form is  <tt>'".
+		  $$scan_record{'scantron.CODE'}."'</tt><br />\n");
+	$r->print($message);
+	$r->print("<p>How should I handle this? <br /> \n");
+	$r->print("\n<br /> ");
+	my $i=0;
+	if ($error eq 'incorrectCODE' 
+	    && $$scan_record{'scantron.CODE'}=~/\S/ ) {
+	    my ($max,$closest)=&scantron_get_closely_matching_CODEs($arg,$$scan_record{'scantron.CODE'});
+	    if ($closest > 0) {
+		foreach my $testcode (@{$closest}) {
+		    my $checked='';
+		    if (!$i) { $checked=' checked="checked" '; }
+		    $r->print("<label><input type='radio' name='scantron_CODE_resolution' value='use_closest_$i' $checked /> Use the similar CODE <b><tt>".$testcode."</tt></b> instead.</label><input type='hidden' name='scantron_CODE_closest_$i' value='$testcode' />");
+		    $r->print("\n<br />");
+		    $i++;
+		}
+	    }
+	}
+	if ($$scan_record{'scantron.CODE'}=~/\S/ ) {
+	    my $checked; if (!$i) { $checked=' checked="checked" '; }
+	    $r->print("<label><input type='radio' name='scantron_CODE_resolution' value='use_unfound' $checked /> Use the CODE <b><tt>".$$scan_record{'scantron.CODE'}."</tt></b> that is was on the paper, ignoring the error.</label>");
+	    $r->print("\n<br />");
+	}
+
+	$r->print(<<ENDSCRIPT);
+<script type="text/javascript">
+function change_radio(field) {
+    var slct=document.scantronupload.scantron_CODE_resolution;
+    var i;
+    for (i=0;i<slct.length;i++) {
+        if (slct[i].value==field) { slct[i].checked=true; }
+    }
+}
+</script>
+ENDSCRIPT
+	my $href="/adm/pickcode?".
+	   "form=".&escape("scantronupload").
+	   "&scantron_format=".&escape($env{'form.scantron_format'}).
+	   "&scantron_CODElist=".&escape($env{'form.scantron_CODElist'}).
+	   "&curCODE=".&escape($$scan_record{'scantron.CODE'}).
+	   "&scantron_selectfile=".&escape($env{'form.scantron_selectfile'});
+	if ($env{'form.scantron_CODElist'} =~ /\S/) { 
+	    $r->print("<label><input type='radio' name='scantron_CODE_resolution' value='use_found' /> <a target='_blank' href='$href'>Select</a> a CODE from the list of all CODEs and use it.</label> Selected CODE is <input readonly='true' type='text' size='8' name='scantron_CODE_selectedvalue' onfocus=\"javascript:change_radio('use_found')\" onchange=\"javascript:change_radio('use_found')\" />");
+	    $r->print("\n<br />");
+	}
+	$r->print("<label><input type='radio' name='scantron_CODE_resolution' value='use_typed' /> Use </label><input type='text' size='8' name='scantron_CODE_newvalue' onfocus=\"javascript:change_radio('use_typed')\" onkeypress=\"javascript:change_radio('use_typed')\" /> as the CODE.");
+	$r->print("\n<br /><br />");
+    } elsif ($error eq 'doublebubble') {
+	$r->print("<p>There have been multiple bubbles scanned for a some question(s)</p>\n");
+	$r->print('<input type="hidden" name="scantron_questions" value="'.
+		  join(',',@{$arg}).'" />');
+	$r->print($message);
+	$r->print("<p>Please indicate which bubble should be used for grading</p>");
+	foreach my $question (@{$arg}) {
+	    my $selected  = &get_response_bubbles($scan_record, $question);
+	    my @select_array = split(/:/,$selected);
+	    &scantron_bubble_selector($r,$scan_config,$question,
+				      @select_array);
+	}
+    } elsif ($error eq 'missingbubble') {
+	$r->print("<p>There have been <b>no</b> bubbles scanned for some question(s)</p>\n");
+	$r->print($message);
+	$r->print("<p>Please indicate which bubble should be used for grading</p>");
+	$r->print("Some questions have no scanned bubbles\n");
+	$r->print('<input type="hidden" name="scantron_questions" value="'.
+		  join(',',@{$arg}).'" />');
+	foreach my $question (@{$arg}) {
+	    my $selected = &get_response_bubbles($scan_record, $question);
+	    &scantron_bubble_selector($r,$scan_config,$question);
+	}
+    } else {
+	$r->print("\n<ul>");
+    }
+    $r->print("\n</li></ul>");
+
+}
+
+=pod
+
+=item scantron_bubble_selector
+  
+   Generates the html radiobuttons to correct a single bubble line
+   possibly showing the existing the selected bubbles if known
+
+ Arguments:
+    $r           - Apache request object
+    $scan_config - hash from &get_scantron_config()
+    $quest       - number of the bubble line to make a corrector for
+    $lines       - array of answer lines.
+
+=cut
+
+sub scantron_bubble_selector {
+    my ($r,$scan_config,$quest,@lines)=@_;
+    my $max=$$scan_config{'Qlength'};
+
+
+    my $scmode=$$scan_config{'Qon'};
+
+    my $bubble_length = scalar(@lines);
+
+
+    if ($scmode eq 'number' || $scmode eq 'letter') { $max=10; }	     
+
+    my $response = $quest-1;
+    my $lines = $bubble_lines_per_response{$response};
+
+    my $total_lines = $lines*2;
+    my @alphabet=('A'..'Z');
+    $r->print("<table border='1'><tr><td rowspan='".$total_lines."'>$quest</td>");
+
+    for (my $l = 0; $l < $lines; $l++) {
+	if ($l != 0) {
+	    $r->print('<tr>');
+	}
+	my @selected = split(//,$lines[$l]);
+	for (my $i=0;$i<$max;$i++) {
+	    $r->print("\n".'<td align="center">');
+	    if ($selected[0] eq $alphabet[$i]) { 
+		$r->print('X'); 
+		shift(@selected) ;
+	    } else { 
+		$r->print('&nbsp;'); 
+	    }
+	    $r->print('</td>');
+	    
+	}
+
+	if ($l == 0) {
+	    my $lspan = $total_lines * 2;   #  2 table rows per bubble line.
+
+	    $r->print('<td rowspan='.$lspan.'><label><input type="radio" name="scantron_correct_Q_'.
+	      $quest.'" value="none" /> No bubble </label></td>');
+	
+	}
+
+	$r->print('</tr><tr>');
+
+	# FIXME: This may have to be a bit more clever for
+	#        multiline questions (different values e.g..).
+
+	for (my $i=0;$i<$max;$i++) {
+	    $r->print("\n".
+		      '<td><label><input type="radio" name="scantron_correct_Q_'.
+		      $quest.'" value="'.$i.'" />'.$alphabet[$i]."</label></td>");
+	}
+	$r->print('</tr>');
+
+	    
+    }
+    $r->print('</table>');
+}
+
+=pod
+
+=item num_matches
+
+   Counts the number of characters that are the same between the two arguments.
+
+ Arguments:
+   $orig - CODE from the scanline
+   $code - CODE to match against
+
+ Returns:
+   $count - integer count of the number of same characters between the
+            two arguments
+
+=cut
+
+sub num_matches {
+    my ($orig,$code) = @_;
+    my @code=split(//,$code);
+    my @orig=split(//,$orig);
+    my $same=0;
+    for (my $i=0;$i<scalar(@code);$i++) {
+	if ($code[$i] eq $orig[$i]) { $same++; }
+    }
+    return $same;
+}
+
+=pod
+
+=item scantron_get_closely_matching_CODEs
+
+   Cycles through all CODEs and finds the set that has the greatest
+   number of same characters as the provided CODE
+
+ Arguments:
+   $allcodes - hash ref returned by &get_codes()
+   $CODE     - CODE from the current scanline
+
+ Returns:
+   2 element list
+    - first elements is number of how closely matching the best fit is 
+      (5 means best set has 5 matching characters)
+    - second element is an arrary ref containing the set of valid CODEs
+      that best fit the passed in CODE
+
+=cut
+
+sub scantron_get_closely_matching_CODEs {
+    my ($allcodes,$CODE)=@_;
+    my @CODEs;
+    foreach my $testcode (sort(keys(%{$allcodes}))) {
+	push(@{$CODEs[&num_matches($CODE,$testcode)]},$testcode);
+    }
+
+    return ($#CODEs,$CODEs[-1]);
+}
+
+=pod
+
+=item get_codes
+
+   Builds a hash which has keys of all of the valid CODEs from the selected
+   set of remembered CODEs.
+
+ Arguments:
+  $old_name - name of the set of remembered CODEs
+  $cdom     - domain of the course
+  $cnum     - internal course name
+
+ Returns:
+  %allcodes - keys are the valid CODEs, values are all 1
+
+=cut
+
+sub get_codes {
+    my ($old_name, $cdom, $cnum) = @_;
+    if (!$old_name) {
+	$old_name=$env{'form.scantron_CODElist'};
+    }
+    if (!$cdom) {
+	$cdom =$env{'course.'.$env{'request.course.id'}.'.domain'};
+    }
+    if (!$cnum) {
+	$cnum =$env{'course.'.$env{'request.course.id'}.'.num'};
+    }
+    my %result=&Apache::lonnet::get('CODEs',[$old_name,"type\0$old_name"],
+				    $cdom,$cnum);
+    my %allcodes;
+    if ($result{"type\0$old_name"} eq 'number') {
+	%allcodes=map {($_,1)} split(',',$result{$old_name});
+    } else {
+	%allcodes=map {(&Apache::lonprintout::num_to_letters($_),1)} split(',',$result{$old_name});
+    }
+    return %allcodes;
+}
+
+=pod
+
+=item scantron_validate_CODE
+
+   Validates all scanlines in the selected file to not have any
+   invalid or underspecified CODEs and that none of the codes are
+   duplicated if this was requested.
+
+=cut
+
+sub scantron_validate_CODE {
+    my ($r,$currentphase) = @_;
+    my %scantron_config=&get_scantron_config($env{'form.scantron_format'});
+    if ($scantron_config{'CODElocation'} &&
+	$scantron_config{'CODEstart'} &&
+	$scantron_config{'CODElength'}) {
+	if (!defined($env{'form.scantron_CODElist'})) {
+	    &FIXME_blow_up()
+	}
+    } else {
+	return (0,$currentphase+1);
+    }
+    
+    my %usedCODEs;
+
+    my %allcodes=&get_codes();
+
+    &scantron_get_maxbubble();	# parse needs the lines per response array.
+
+    my ($scanlines,$scan_data)=&scantron_getfile();
+    for (my $i=0;$i<=$scanlines->{'count'};$i++) {
+	my $line=&scantron_get_line($scanlines,$scan_data,$i);
+	if ($line=~/^[\s\cz]*$/) { next; }
+	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
+						 $scan_data);
+	my $CODE=$$scan_record{'scantron.CODE'};
+	my $error=0;
+	if (!&Apache::lonnet::validCODE($CODE)) {
+	    &scantron_get_correction($r,$i,$scan_record,
+				     \%scantron_config,
+				     $line,'incorrectCODE',\%allcodes);
+	    return(1,$currentphase);
+	}
+	if (%allcodes && !exists($allcodes{$CODE}) 
+	    && !$$scan_record{'scantron.useCODE'}) {
+	    &scantron_get_correction($r,$i,$scan_record,
+				     \%scantron_config,
+				     $line,'incorrectCODE',\%allcodes);
+	    return(1,$currentphase);
+	}
+	if (exists($usedCODEs{$CODE}) 
+	    && $env{'form.scantron_CODEunique'} eq 'yes'
+	    && !$$scan_record{'scantron.CODE_ignore_dup'}) {
+	    &scantron_get_correction($r,$i,$scan_record,
+				     \%scantron_config,
+				     $line,'duplicateCODE',$usedCODEs{$CODE});
+	    return(1,$currentphase);
+	}
+	push (@{$usedCODEs{$CODE}},$$scan_record{'scantron.PaperID'});
+    }
+    return (0,$currentphase+1);
+}
+
+=pod
+
+=item scantron_validate_doublebubble
+
+   Validates all scanlines in the selected file to not have any
+   bubble lines with multiple bubbles marked.
+
+=cut
+
+sub scantron_validate_doublebubble {
+    my ($r,$currentphase) = @_;
+    #get student info
+    my $classlist=&Apache::loncoursedata::get_classlist();
+    my %idmap=&username_to_idmap($classlist);
+
+    #get scantron line setup
+    my %scantron_config=&get_scantron_config($env{'form.scantron_format'});
+    my ($scanlines,$scan_data)=&scantron_getfile();
+
+    &scantron_get_maxbubble();	# parse needs the bubble line array.
+
+    for (my $i=0;$i<=$scanlines->{'count'};$i++) {
+	my $line=&scantron_get_line($scanlines,$scan_data,$i);
+	if ($line=~/^[\s\cz]*$/) { next; }
+	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
+						 $scan_data);
+	if (!defined($$scan_record{'scantron.doubleerror'})) { next; }
+	&scantron_get_correction($r,$i,$scan_record,\%scantron_config,$line,
+				 'doublebubble',
+				 $$scan_record{'scantron.doubleerror'});
+    	return (1,$currentphase);
+    }
+    return (0,$currentphase+1);
+}
+
+=pod
+
+=item scantron_get_maxbubble
+
+   Returns the maximum number of bubble lines that are expected to
+   occur. Does this by walking the selected sequence rendering the
+   resource and then checking &Apache::lonxml::get_problem_counter()
+   for what the current value of the problem counter is.
+
+   Caches the results to $env{'form.scantron_maxbubble'},
+   $env{'form.scantron.bubble_lines.n'} and 
+   $env{'form.scantron.first_bubble_line.n'}
+   which are the total number of bubble, lines, the number of bubble
+   lines for reponse n and number of the first bubble line for response n.
+
+=cut
+
+sub scantron_get_maxbubble {    
+    if (defined($env{'form.scantron_maxbubble'}) &&
+	$env{'form.scantron_maxbubble'}) {
+	&restore_bubble_lines();
+	return $env{'form.scantron_maxbubble'};
+    }
+
+    my (undef, undef, $sequence) =
+	&Apache::lonnet::decode_symb($env{'form.selectpage'});
+
+    my $navmap=Apache::lonnavmaps::navmap->new();
+    my $map=$navmap->getResourceByUrl($sequence);
+    my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
+
+    &Apache::lonxml::clear_problem_counter();
+
+    my $uname       = $env{'form.student'};
+    my $udom        = $env{'form.userdom'};
+    my $cid         = $env{'request.course.id'};
+    my $total_lines = 0;
+    %bubble_lines_per_response = ();
+    %first_bubble_line         = ();
+
+  
+    my $response_number = 0;
+    my $bubble_line     = 0;
+    foreach my $resource (@resources) {
+	my $symb = $resource->symb();
+	&Apache::lonxml::clear_bubble_lines_for_part();
+	my $result=&Apache::lonnet::ssi($resource->src(),
+					('symb' => $resource->symb()),
+					('grade_target' => 'analyze'),
+					('grade_courseid' => $cid),
+					('grade_domain' => $udom),
+					('grade_username' => $uname));
+	my (undef, $an) =
+	    split(/_HASH_REF__/,$result, 2);
+
+	my %analysis = &Apache::lonnet::str2hash($an);
+
+
+
+	foreach my $part_id (@{$analysis{'parts'}}) {
+
+
+	    my $lines = $analysis{"$part_id.bubble_lines"};;
+
+	    # TODO - make this a persistent hash not an array.
+
+
+	    $first_bubble_line{$response_number}           = $bubble_line;
+	    $bubble_lines_per_response{$response_number}   = $lines;
+	    $response_number++;
+
+	    $bubble_line +=  $lines;
+	    $total_lines +=  $lines;
+	}
+
+    }
+    &Apache::lonnet::delenv('scantron\.');
+
+    &save_bubble_lines();
+    $env{'form.scantron_maxbubble'} =
+	$total_lines;
+    return $env{'form.scantron_maxbubble'};
+}
+
+=pod
+
+=item scantron_validate_missingbubbles
+
+   Validates all scanlines in the selected file to not have any
+    answers that don't have bubbles that have not been verified
+    to be bubble free.
+
+=cut
+
+sub scantron_validate_missingbubbles {
+    my ($r,$currentphase) = @_;
+    #get student info
+    my $classlist=&Apache::loncoursedata::get_classlist();
+    my %idmap=&username_to_idmap($classlist);
+
+    #get scantron line setup
+    my %scantron_config=&get_scantron_config($env{'form.scantron_format'});
+    my ($scanlines,$scan_data)=&scantron_getfile();
+    my $max_bubble=&scantron_get_maxbubble();
+    if (!$max_bubble) { $max_bubble=2**31; }
+    for (my $i=0;$i<=$scanlines->{'count'};$i++) {
+	my $line=&scantron_get_line($scanlines,$scan_data,$i);
+	if ($line=~/^[\s\cz]*$/) { next; }
+	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
+						 $scan_data);
+	if (!defined($$scan_record{'scantron.missingerror'})) { next; }
+	my @to_correct;
+	foreach my $missing (@{$$scan_record{'scantron.missingerror'}}) {
+	    if ($missing > $max_bubble) { next; }
+	    push(@to_correct,$missing);
+	}
+	if (@to_correct) {
+	    &scantron_get_correction($r,$i,$scan_record,\%scantron_config,
+				     $line,'missingbubble',\@to_correct);
+	    return (1,$currentphase);
+	}
+
+    }
+    return (0,$currentphase+1);
+}
+
+=pod
+
+=item scantron_process_students
+
+   Routine that does the actual grading of the bubble sheet information.
+
+   The parsed scanline hash is added to %env 
+
+   Then foreach unskipped scanline it does an &Apache::lonnet::ssi()
+   foreach resource , with the form data of
+
+	'submitted'     =>'scantron' 
+	'grade_target'  =>'grade',
+	'grade_username'=> username of student
+	'grade_domain'  => domain of student
+	'grade_courseid'=> of course
+	'grade_symb'    => symb of resource to grade
+
+    This triggers a grading pass. The problem grading code takes care
+    of converting the bubbled letter information (now in %env) into a
+    valid submission.
+
+=cut
+
+sub scantron_process_students {
+    my ($r) = @_;
+    my (undef,undef,$sequence)=&Apache::lonnet::decode_symb($env{'form.selectpage'});
+    my ($symb)=&get_symb($r);
+    if (!$symb) {return '';}
+    my $default_form_data=&defaultFormData($symb);
+
+    my %scantron_config=&get_scantron_config($env{'form.scantron_format'});
+    my ($scanlines,$scan_data)=&scantron_getfile();
+    my $classlist=&Apache::loncoursedata::get_classlist();
+    my %idmap=&username_to_idmap($classlist);
+    my $navmap=Apache::lonnavmaps::navmap->new();
+    my $map=$navmap->getResourceByUrl($sequence);
+    my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
+#    $r->print("geto ".scalar(@resources)."<br />");
+    my $result= <<SCANTRONFORM;
+<form method="post" enctype="multipart/form-data" action="/adm/grades" name="scantronupload">
+  <input type="hidden" name="command" value="scantron_configphase" />
+  $default_form_data
+SCANTRONFORM
+    $r->print($result);
+
+    my @delayqueue;
+    my %completedstudents;
+    
+    my $count=&get_todo_count($scanlines,$scan_data);
+    my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Scantron Status',
+ 				    'Scantron Progress',$count,
+				    'inline',undef,'scantronupload');
+    &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,
+					  'Processing first student');
+    my $start=&Time::HiRes::time();
+    my $i=-1;
+    my ($uname,$udom,$started);
+
+    &scantron_get_maxbubble();	# Need the bubble lines array to parse.
+
+    while ($i<$scanlines->{'count'}) {
+ 	($uname,$udom)=('','');
+ 	$i++;
+ 	my $line=&scantron_get_line($scanlines,$scan_data,$i);
+ 	if ($line=~/^[\s\cz]*$/) { next; }
+	if ($started) {
+	    &Apache::lonhtmlcommon::Increment_PrgWin($r,\%prog_state,
+						     'last student');
+	}
+	$started=1;
+ 	my $scan_record=&scantron_parse_scanline($line,$i,\%scantron_config,
+ 						 $scan_data);
+ 	unless ($uname=&scantron_find_student($scan_record,$scan_data,
+ 					      \%idmap,$i)) {
+  	    &scantron_add_delay(\@delayqueue,$line,
+ 				'Unable to find a student that matches',1);
+ 	    next;
+  	}
+ 	if (exists $completedstudents{$uname}) {
+ 	    &scantron_add_delay(\@delayqueue,$line,
+ 				'Student '.$uname.' has multiple sheets',2);
+ 	    next;
+ 	}
+  	($uname,$udom)=split(/:/,$uname);
+
+	&Apache::lonxml::clear_problem_counter();
+  	&Apache::lonnet::appenv(%$scan_record);
+
+	if (&scantron_clear_skip($scanlines,$scan_data,$i)) {
+	    &scantron_putfile($scanlines,$scan_data);
+	}
+	
+	my $i=0;
+	foreach my $resource (@resources) {
+	    $i++;
+	    my %form=('submitted'     =>'scantron',
+		      'grade_target'  =>'grade',
+		      'grade_username'=>$uname,
+		      'grade_domain'  =>$udom,
+		      'grade_courseid'=>$env{'request.course.id'},
+		      'grade_symb'    =>$resource->symb());
+	    if (exists($scan_record->{'scantron.CODE'})
+		&& 
+		&Apache::lonnet::validCODE($scan_record->{'scantron.CODE'})) {
+		$form{'CODE'}=$scan_record->{'scantron.CODE'};
+	    } else {
+		$form{'CODE'}='';
+	    }
+	    my $result=&Apache::lonnet::ssi($resource->src(),%form);
+	    if ($result ne '') {
+	    }
+	    if (&Apache::loncommon::connection_aborted($r)) { last; }
+	}
+	$completedstudents{$uname}={'line'=>$line};
+	if (&Apache::loncommon::connection_aborted($r)) { last; }
+    } continue {
+	&Apache::lonxml::clear_problem_counter();
+	&Apache::lonnet::delenv('scantron\.');
+    }
+    &Apache::lonhtmlcommon::Close_PrgWin($r,\%prog_state);
+#    my $lasttime = &Time::HiRes::time()-$start;
+#    $r->print("<p>took $lasttime</p>");
+
+    $r->print("</form>");
+    $r->print(&show_grading_menu_form($symb));
+    return '';
+}
+
+=pod
+
+=item scantron_upload_scantron_data
+
+    Creates the screen for adding a new bubble sheet data file to a course.
+
+=cut
+
+sub scantron_upload_scantron_data {
+    my ($r)=@_;
+    $r->print(&Apache::loncommon::coursebrowser_javascript($env{'request.role.domain'}));
+    my $select_link=&Apache::loncommon::selectcourse_link('rules','courseid',
+							  'domainid',
+							  'coursename');
+    my $domsel=&Apache::loncommon::select_dom_form($env{'request.role.domain'},
+						   'domainid');
+    my $default_form_data=&defaultFormData(&get_symb($r,1));
+    $r->print(<<UPLOAD);
+<script type="text/javascript" language="javascript">
+    function checkUpload(formname) {
+	if (formname.upfile.value == "") {
+	    alert("Please use the browse button to select a file from your local directory.");
+	    return false;
+	}
+	formname.submit();
+    }
+</script>
+
+<form enctype='multipart/form-data' action='/adm/grades' name='rules' method='post'>
+$default_form_data
+<table>
+<tr><td>$select_link </td></tr>
+<tr><td>Course ID:   </td><td><input name='courseid' type='text' />  </td></tr>
+<tr><td>Course Name: </td><td><input name='coursename' type='text' /></td></tr>
+<tr><td>Domain:      </td><td>$domsel                                </td></tr>
+<tr><td>File to upload:</td><td><input type="file" name="upfile" size="50" /></td></tr>
+</table>
+<input name='command' value='scantronupload_save' type='hidden' />
+<input type="button" onClick="javascript:checkUpload(this.form);" value="Upload Scantron Data" />
+</form>
+UPLOAD
+    return '';
+}
+
+=pod
+
+=item scantron_upload_scantron_data_save
+
+   Adds a provided bubble information data file to the course if user
+   has the correct privileges to do so.  
+
+=cut
+
+sub scantron_upload_scantron_data_save {
+    my($r)=@_;
+    my ($symb)=&get_symb($r,1);
+    my $doanotherupload=
+	'<br /><form action="/adm/grades" method="post">'."\n".
+	'<input type="hidden" name="command" value="scantronupload" />'."\n".
+	'<input type="submit" name="submit" value="Do Another Upload" />'."\n".
+	'</form>'."\n";
+    if (!&Apache::lonnet::allowed('usc',$env{'form.domainid'}) &&
+	!&Apache::lonnet::allowed('usc',
+			    $env{'form.domainid'}.'_'.$env{'form.courseid'})) {
+	$r->print("You are not allowed to upload Scantron data to the requested course.<br />");
+	if ($symb) {
+	    $r->print(&show_grading_menu_form($symb));
+	} else {
+	    $r->print($doanotherupload);
+	}
+	return '';
+    }
+    my %coursedata=&Apache::lonnet::coursedescription($env{'form.domainid'}.'_'.$env{'form.courseid'});
+    $r->print("Doing upload to ".$coursedata{'description'}." <br />");
+    my $fname=$env{'form.upfile.filename'};
+    #FIXME
+    #copied from lonnet::userfileupload()
+    #make that function able to target a specified course
+    # Replace Windows backslashes by forward slashes
+    $fname=~s/\\/\//g;
+    # Get rid of everything but the actual filename
+    $fname=~s/^.*\/([^\/]+)$/$1/;
+    # Replace spaces by underscores
+    $fname=~s/\s+/\_/g;
+    # Replace all other weird characters by nothing
+    $fname=~s/[^\w\.\-]//g;
+    # See if there is anything left
+    unless ($fname) { return 'error: no uploaded file'; }
+    my $uploadedfile=$fname;
+    $fname='scantron_orig_'.$fname;
+    if (length($env{'form.upfile'}) < 2) {
+	$r->print("<span class=\"LC_error\">Error:</span> The file you attempted to upload, <tt>".&HTML::Entities::encode($env{'form.upfile.filename'},'<>&"')."</tt>, contained no information. Please check that you entered the correct filename.");
+    } else {
+	my $result=&Apache::lonnet::finishuserfileupload($env{'form.courseid'},$env{'form.domainid'},'upfile',$fname);
+	if ($result =~ m|^/uploaded/|) {
+	    $r->print("<span class=\"LC_success\">Success:</span> Successfully uploaded ".(length($env{'form.upfile'})-1)." bytes of data into location <tt>".$result."</tt>");
+	} else {
+	    $r->print("<span class=\"LC_error\">Error:</span> An error (".$result.") occurred when attempting to upload the file, <tt>".&HTML::Entities::encode($env{'form.upfile.filename'},'<>&"')."</tt>");
+	}
+    }
+    if ($symb) {
+	$r->print(&scantron_selectphase($r,$uploadedfile));
+    } else {
+	$r->print($doanotherupload);
+    }
+    return '';
+}
+
+=pod
+
+=item valid_file
+
+   Validates that the requested bubble data file exists in the course.
+
+=cut
+
+sub valid_file {
+    my ($requested_file)=@_;
+    foreach my $filename (sort(&scantron_filenames())) {
+	if ($requested_file eq $filename) { return 1; }
+    }
+    return 0;
+}
+
+=pod
+
+=item scantron_download_scantron_data
+
+   Shows a list of the three internal files (original, corrected,
+   skipped) for a specific bubble sheet data file that exists in the
+   course.
+
+=cut
+
+sub scantron_download_scantron_data {
+    my ($r)=@_;
+    my $default_form_data=&defaultFormData(&get_symb($r,1));
+    my $cname=$env{'course.'.$env{'request.course.id'}.'.num'};
+    my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
+    my $file=$env{'form.scantron_selectfile'};
+    if (! &valid_file($file)) {
+	$r->print(<<ERROR);
+	<p>
+	    The requested file name was invalid.
+        </p>
+ERROR
+	$r->print(&show_grading_menu_form(&get_symb($r,1)));
+	return;
+    }
+    my $orig='/uploaded/'.$cdom.'/'.$cname.'/scantron_orig_'.$file;
+    my $corrected='/uploaded/'.$cdom.'/'.$cname.'/scantron_corrected_'.$file;
+    my $skipped='/uploaded/'.$cdom.'/'.$cname.'/scantron_skipped_'.$file;
+    &Apache::lonnet::allowuploaded('/adm/grades',$orig);
+    &Apache::lonnet::allowuploaded('/adm/grades',$corrected);
+    &Apache::lonnet::allowuploaded('/adm/grades',$skipped);
+    $r->print(<<DOWNLOAD);
+    <p>
+	<a href="$orig">Original</a> file as uploaded by the scantron office.
+    </p>
+    <p>
+	<a href="$corrected">Corrections</a>, a file of corrected records that were used in grading.
+    </p>
+    <p>
+	<a href="$skipped">Skipped</a>, a file of records that were skipped.
+    </p>
+DOWNLOAD
+    $r->print(&show_grading_menu_form(&get_symb($r,1)));
+    return '';
+}
+
+=pod
+
+=back
+
+=cut
+
+#-------- end of section for handling grading scantron forms -------
+#
+#-------------------------------------------------------------------
+
+#-------------------------- Menu interface -------------------------
+#
+#--- Show a Grading Menu button - Calls the next routine ---
+sub show_grading_menu_form {
+    my ($symb)=@_;
+    my $result.='<br /><form action="/adm/grades" method="post">'."\n".
+	'<input type="hidden" name="symb" value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
+	'<input type="hidden" name="saveState"  value="'.$env{'form.saveState'}.'" />'."\n".
+	'<input type="hidden" name="command" value="gradingmenu" />'."\n".
+	'<input type="submit" name="submit" value="Grading Menu" />'."\n".
+	'</form>'."\n";
+    return $result;
+}
+
+# -- Retrieve choices for grading form
+sub savedState {
+    my %savedState = ();
+    if ($env{'form.saveState'}) {
+	foreach (split(/:/,$env{'form.saveState'})) {
+	    my ($key,$value) = split(/=/,$_,2);
+	    $savedState{$key} = $value;
+	}
+    }
+    return \%savedState;
+}
+
+sub grading_menu {
+    my ($request) = @_;
+    my ($symb)=&get_symb($request);
+    if (!$symb) {return '';}
+    my $probTitle = &Apache::lonnet::gettitle($symb);
+    my ($table,undef,$hdgrade) = &showResourceInfo($symb,$probTitle);
+
+    $request->print($table);
+    my %fields = ('symb'=>&Apache::lonenc::check_encrypt($symb),
+                  'handgrade'=>$hdgrade,
+                  'probTitle'=>$probTitle,
+                  'command'=>'submit_options',
+                  'saveState'=>"",
+                  'gradingMenu'=>1,
+                  'showgrading'=>"yes");
+    my $url = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
+    my @menu = ({ url => $url,
+                     name => &mt('Manual Grading/View Submissions'),
+                     short_description => 
+    &mt('Start the process of hand grading submissions.'),
+                 });
+    $fields{'command'} = 'csvform';
+    $url = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
+    push (@menu, { url => $url,
+                   name => &mt('Upload Scores'),
+                   short_description => 
+            &mt('Specify a file containing the class scores for current resource.')});
+    $fields{'command'} = 'processclicker';
+    $url = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
+    push (@menu, { url => $url,
+                   name => &mt('Process Clicker'),
+                   short_description => 
+            &mt('Specify a file containing the clicker information for this resource.')});
+    $fields{'command'} = 'scantron_selectphase';
+    $url = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
+    push (@menu, { url => $url,
+                   name => &mt('Grade/Manage Scantron Forms'),
+                   short_description => 
+            &mt('')});
+    $fields{'command'} = 'verify';
+    $url = &Apache::lonhtmlcommon::build_url('grades/',\%fields);
+    push (@menu, { url => "",
+                   name => &mt('Verify Receipt'),
+                   short_description => 
+            &mt('')});
+    #
+    # Create the menu
+    my $Str;
+    # $Str .= '<h2>'.&mt('Please select a grading task').'</h2>';
+    $Str .= '<form method="post" action="" name="gradingMenu">';
+    $Str .= '<input type="hidden" name="command" value="" />'.
+    	'<input type="hidden" name="symb"        value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
+	'<input type="hidden" name="handgrade"   value="'.$hdgrade.'" />'."\n".
+	'<input type="hidden" name="probTitle"   value="'.$probTitle.'" ue="" />'."\n".
+	'<input type="hidden" name="saveState"   value="" />'."\n".
+	'<input type="hidden" name="gradingMenu" value="1" />'."\n".
+	'<input type="hidden" name="showgrading" value="yes" />'."\n";
+
+    foreach my $menudata (@menu) {
+        if ($menudata->{'name'} ne &mt('Verify Receipt')) {
+            $Str .='    <h3><a '.
+                $menudata->{'jscript'}.
+                ' href="'.
+                $menudata->{'url'}.'" >'.
+                $menudata->{'name'}."</a></h3>\n";
+        } else {
+            $Str .='    <h3><input type="button" value="Verify Receipt" '.
+                $menudata->{'jscript'}.
+                ' onClick="javascript:checkChoice(document.forms.gradingMenu,\'5\',\'verify\')" '.
+                ' /></h3>';
+            $Str .= ('&nbsp;'x8).
+                    ' receipt: '.&Apache::lonnet::recprefix($env{'request.course.id'}).
+                    '-<input type="text" name="receipt" size="4" onChange="javascript:checkReceiptNo(this.form,\'OK\')" />';
+        }
+        $Str .= '    '.('&nbsp;'x8).$menudata->{'short_description'}.
+            "\n";
+    }
+    $Str .="</dl>\n";
+    $Str .="</form>\n";
+    $request->print(<<GRADINGMENUJS);
+<script type="text/javascript" language="javascript">
+    function checkChoice(formname,val,cmdx) {
+	if (val <= 2) {
+	    var cmd = radioSelection(formname.radioChoice);
+	    var cmdsave = cmd;
+	} else {
+	    cmd = cmdx;
+	    cmdsave = 'submission';
+	}
+	formname.command.value = cmd;
+	if (val < 5) formname.submit();
+	if (val == 5) {
+	    if (!checkReceiptNo(formname,'notOK')) { 
+	        return false;
+	    } else {
+	        formname.submit();
+	    }
+	}
+    }
+
+    function checkReceiptNo(formname,nospace) {
+	var receiptNo = formname.receipt.value;
+	var checkOpt = false;
+	if (nospace == "OK" && isNaN(receiptNo)) {checkOpt = true;}
+	if (nospace == "notOK" && (isNaN(receiptNo) || receiptNo == "")) {checkOpt = true;}
+	if (checkOpt) {
+	    alert("Please enter a receipt number given by a student in the receipt box.");
+	    formname.receipt.value = "";
+	    formname.receipt.focus();
+	    return false;
+	}
+	return true;
+    }
+</script>
+GRADINGMENUJS
+    &commonJSfunctions($request);
+    return $Str;    
+}
+
+
+#--- Displays the submissions first page -------
+sub submit_options {
+    my ($request) = @_;
+    my ($symb)=&get_symb($request);
+    if (!$symb) {return '';}
+    my $probTitle = &Apache::lonnet::gettitle($symb);
+
+    $request->print(<<GRADINGMENUJS);
+<script type="text/javascript" language="javascript">
+    function checkChoice(formname,val,cmdx) {
+	if (val <= 2) {
+	    var cmd = radioSelection(formname.radioChoice);
+	    var cmdsave = cmd;
+	} else {
+	    cmd = cmdx;
+	    cmdsave = 'submission';
+	}
+	formname.command.value = cmd;
+	formname.saveState.value = "saveCmd="+cmdsave+":saveSec="+pullDownSelection(formname.section)+
+	    ":saveSub="+pullDownSelection(formname.submitonly)+":saveStatus="+pullDownSelection(formname.Status);
+	if (val < 5) formname.submit();
+	if (val == 5) {
+	    if (!checkReceiptNo(formname,'notOK')) { return false;}
+	    formname.submit();
+	}
+	if (val < 7) formname.submit();
+    }
+
+    function checkReceiptNo(formname,nospace) {
+	var receiptNo = formname.receipt.value;
+	var checkOpt = false;
+	if (nospace == "OK" && isNaN(receiptNo)) {checkOpt = true;}
+	if (nospace == "notOK" && (isNaN(receiptNo) || receiptNo == "")) {checkOpt = true;}
+	if (checkOpt) {
+	    alert("Please enter a receipt number given by a student in the receipt box.");
+	    formname.receipt.value = "";
+	    formname.receipt.focus();
+	    return false;
+	}
+	return true;
+    }
+</script>
+GRADINGMENUJS
+    &commonJSfunctions($request);
+    my $result='<h3>&nbsp;<span class="LC_info">Manual Grading/View Submission</span></h3>';
+    my ($table,undef,$hdgrade) = &showResourceInfo($symb,$probTitle);
+    $result.=$table;
+    my (undef,$sections) = &getclasslist('all','0');
+    my $savedState = &savedState();
+    my $saveCmd = ($$savedState{'saveCmd'} eq '' ? 'submission' : $$savedState{'saveCmd'});
+    my $saveSec = ($$savedState{'saveSec'} eq '' ? 'all' : $$savedState{'saveSec'});
+    my $saveSub = ($$savedState{'saveSub'} eq '' ? 'all' : $$savedState{'saveSub'});
+    my $saveStatus = ($$savedState{'saveStatus'} eq '' ? 'Active' : $$savedState{'saveStatus'});
+
+    $result.='<form action="/adm/grades" method="post" name="gradingMenu">'."\n".
+	'<input type="hidden" name="symb"        value="'.&Apache::lonenc::check_encrypt($symb).'" />'."\n".
+	'<input type="hidden" name="handgrade"   value="'.$hdgrade.'" />'."\n".
+	'<input type="hidden" name="probTitle"   value="'.$probTitle.'" />'."\n".
+	'<input type="hidden" name="command"     value="" />'."\n".
+	'<input type="hidden" name="saveState"   value="" />'."\n".
+	'<input type="hidden" name="gradingMenu" value="1" />'."\n".
+	'<input type="hidden" name="showgrading" value="yes" />'."\n";
+
+    $result.='<table border="0"><tr><td bgcolor=#777777>'."\n".
+	'<table width="100%" border="0"><tr bgcolor="#e6ffff"><td>'."\n".
+	'&nbsp;<b>Select a Grading/Viewing Option</b></td></tr>'."\n".
+	'<tr bgcolor="#ffffe6" valign="top"><td>'."\n";
+
+    $result.='<table width="100%" border="0">';
+    $result.='<tr bgcolor="#ffffe6" valign="top">'."\n";
+    $result.='<td><b>'.&mt('Sections').'</b></td>';
+    $result.='<td><b>'.&mt('Groups').'</b></td>';
+    $result.='<td><b>'.&mt('Access Status').'</td>'."\n";
+    $result.='<td><b>'.&mt('Submission Status').'</td>'."\n";
+    $result.='</tr>';
+    $result.='<tr bgcolor="#ffffe6" valign="top"><td>'."\n".
+	'&nbsp;<select name="section" multiple="multiple" size="3">'."\n";
+    if (ref($sections)) {
+	foreach (sort (@$sections)) {
+	    $result.='<option value="'.$_.'" '.
+		($saveSec eq $_ ? 'selected="selected"':'').'>'.$_.'</option>'."\n";
+	}
+    }
+    $result.= '<option value="all" '.($saveSec eq 'all' ? 'selected="selected"' : ''). '>all</option></select> &nbsp; ';
+    $result.= '</td><td>'."\n";
+    $result.= &Apache::lonstatistics::GroupSelect('group','multiple',3);
+    $result.='</td><td>'."\n";
+    $result.=&Apache::lonhtmlcommon::StatusOptions($saveStatus,undef,3,undef,'mult');
+
+    $result.='</td>';
+    $result.='<td><select name="submitonly" size="3">'.
+	'<option value="yes" '.
+	($saveSub eq 'yes' ? 'selected="selected"' : '').'>'.&mt('with submissions').'</option>'.
+	'<option value="queued" '.
+	($saveSub eq 'queued' ? 'selected="selected"' : '').'>'.&mt('in grading queue').'</option>'.
+	'<option value="graded" '.
+	($saveSub eq 'graded' ? 'selected="selected"' : '').'>'.&mt('with ungraded submissions').'</option>'.
+	'<option value="incorrect" '.
+	($saveSub eq 'incorrect' ? 'selected="selected"' : '').'>'.&mt('with incorrect submissions').'</option>'.
+	'<option value="all" '.
+	($saveSub eq 'all' ? 'selected="selected"' : '').'>'.&mt('with any status').'</option></select></td></tr>';
+
+    $result.='<tr bgcolor="#ffffe6"valign="top"><td colspan="3"><label>'.
+	'<input type="radio" name="radioChoice" value="submission" '.
+	($saveCmd eq 'submission' ? 'checked="checked"' : '').' /> '.'<b>'.&mt('Current Resource').':</b> '.&mt('For one or more students').
+	'</label> </td></tr>'."\n";
+
+    $result.='<tr bgcolor="#ffffe6"valign="top"><td colspan="3">'.
+	'<label><input type="radio" name="radioChoice" value="viewgrades" '.
+	($saveCmd eq 'viewgrades' ? 'checked="checked"' : '').' /> '.
+	'<b>Current Resource:</b> For all students in selected section or course</label></td></tr>'."\n";
+
+    $result.='<tr bgcolor="#ffffe6"><td colspan="3"><br />'.
+	'<input type="button" onClick="javascript:checkChoice(this.form,\'2\');" value="Next->" />'.
+	'</td></tr>'."\n";
+
+
+    $result.='<tr bgcolor="#ffffe6" valign="top"><td colspan="3">'.
+	'<br /><label><input type="radio" name="radioChoice" value="pickStudentPage" '.
+	($saveCmd eq 'pickStudentPage' ? 'checked="checked"' : '').' /> '.
+	'The <b>complete</b> set/page/sequence/folder: For one student</label></td></tr>'."\n";
+
+    $result.='<tr bgcolor="#ffffe6"><td colspan="3"><br />'.
+	'<input type="button" onClick="javascript:checkChoice(this.form,\'2\');" value="Next->" />'.
+	'</td></tr></table>'."\n";
+
+    $result.='</td>'; #<td valign="top">';
+
+#    $result.='<table width="100%" border="0">';
+#    $result.='<tr bgcolor="#ffffe6"><td>'.
+#	'<input type="button" onClick="javascript:checkChoice(this.form,\'3\',\'csvform\');" value="'.&mt('Upload').'" />'.
+#	' '.&mt('scores from file').' </td></tr>'."\n";
+#
+#    $result.='<tr bgcolor="#ffffe6"><td>'.
+#        '<input type="button" onClick="javascript:checkChoice(this.form,\'6\',\'processclicker\');" value="'.&mt('Process').'" />'.
+#        ' '.&mt('clicker file').' </td></tr>'."\n";
+#
+#    $result.='<tr bgcolor="#ffffe6"valign="top"><td colspan="2">'.
+#	'<input type="button" onClick="javascript:checkChoice(this.form,\'4\',\'scantron_selectphase\');'.
+#	'" value="'.&mt('Grade').'" /> scantron forms</td></tr>'."\n";
+#
+#    if ((&Apache::lonnet::allowed('mgr',$env{'request.course.id'})) && ($symb)) {
+#	$result.='<tr bgcolor="#ffffe6"valign="top"><td>'.
+#	    '<input type="button" onClick="javascript:checkChoice(this.form,\'5\',\'verify\');" value="'.&mt('Verify').'" />'.
+#	    ' '.&mt('receipt').': '.
+#	    &Apache::lonnet::recprefix($env{'request.course.id'}).
+#	    '-<input type="text" name="receipt" size="4" onChange="javascript:checkReceiptNo(this.form,\'OK\')" />'.
+#	    '</td></tr>'."\n";
+#    } 
+#    $result.='<tr bgcolor="#ffffe6"valign="top"><td colspan="2">'.
+#	'<input type="button" onClick="javascript:this.form.action=\'/adm/helper/resettimes.helper\';this.form.submit();'.
+#	'" value="'.&mt('Manage').'" /> access times.</td></tr>'."\n";
+#    $result.='<tr bgcolor="#ffffe6"valign="top"><td colspan="2">'.
+#	'<input type="button" onClick="javascript:this.form.command.value=\'codelist\';this.form.action=\'/adm/pickcode\';this.form.submit();'.
+#	'" value="'.&mt('View').'" /> saved CODEs.</td></tr>'."\n";
+#
+#    $result.='</table>'."\n".'</td>';
+    $result.= '</tr></table>'."\n".
+	'</td></tr></table></form>'."\n";
+    return $result;
+}
+
+sub reset_perm {
+    undef(%perm);
+}
+
+sub init_perm {
+    &reset_perm();
+    foreach my $test_perm ('vgr','mgr','opa') {
+
+	my $scope = $env{'request.course.id'};
+	if (!($perm{$test_perm}=&Apache::lonnet::allowed($test_perm,$scope))) {
+
+	    $scope .= '/'.$env{'request.course.sec'};
+	    if ( $perm{$test_perm}=
+		 &Apache::lonnet::allowed($test_perm,$scope)) {
+		$perm{$test_perm.'_section'}=$env{'request.course.sec'};
+	    } else {
+		delete($perm{$test_perm});
+	    }
+	}
+    }
+}
+
+sub gather_clicker_ids {
+    my %clicker_ids;
+
+    my $classlist = &Apache::loncoursedata::get_classlist();
+
+    # Set up a couple variables.
+    my $username_idx = &Apache::loncoursedata::CL_SNAME();
+    my $domain_idx   = &Apache::loncoursedata::CL_SDOM();
+    my $status_idx   = &Apache::loncoursedata::CL_STATUS();
+
+    foreach my $student (keys(%$classlist)) {
+        if ($classlist->{$student}->[$status_idx] ne 'Active') { next; }
+        my $username = $classlist->{$student}->[$username_idx];
+        my $domain   = $classlist->{$student}->[$domain_idx];
+        my $clickers =
+	    (&Apache::lonnet::userenvironment($domain,$username,'clickers'))[1];
+        foreach my $id (split(/\,/,$clickers)) {
+            $id=~s/^[\#0]+//;
+            $id=~s/[\-\:]//g;
+            if (exists($clicker_ids{$id})) {
+		$clicker_ids{$id}.=','.$username.':'.$domain;
+            } else {
+		$clicker_ids{$id}=$username.':'.$domain;
+            }
+        }
+    }
+    return %clicker_ids;
+}
+
+sub gather_adv_clicker_ids {
+    my %clicker_ids;
+    my $cnum=$env{'course.'.$env{'request.course.id'}.'.num'};
+    my $cdom=$env{'course.'.$env{'request.course.id'}.'.domain'};
+    my %coursepersonnel=&Apache::lonnet::get_course_adv_roles($cdom.'/'.$cnum);
+    foreach my $element (sort(keys(%coursepersonnel))) {
+        foreach my $person (split(/\,/,$coursepersonnel{$element})) {
+            my ($puname,$pudom)=split(/\:/,$person);
+            my $clickers =
+		(&Apache::lonnet::userenvironment($pudom,$puname,'clickers'))[1];
+            foreach my $id (split(/\,/,$clickers)) {
+		$id=~s/^[\#0]+//;
+                $id=~s/[\-\:]//g;
+		if (exists($clicker_ids{$id})) {
+		    $clicker_ids{$id}.=','.$puname.':'.$pudom;
+		} else {
+		    $clicker_ids{$id}=$puname.':'.$pudom;
+		}
             }
-	 } else {
-             $request->print(&Apache::lonxml::tokeninputfield());
-         }
-     }
-  } else {
-    $Apache::grades::viewgrades=&Apache::lonnet::allowed('vgr',$ENV{'request.course.id'});
-    if ($command eq 'submission') {
-      &listStudents($request) if ($ENV{'form.student'} eq '');
-      $request->print(&submission($request)) if ($ENV{'form.student'} ne '');
-    } elsif ($command eq 'viewgrades') {
-      $request->print(&viewgrades($request));
-    } elsif ($command eq 'editgrades') {
-      $request->print(&editgrades($request));
+        }
+    }
+    return %clicker_ids;
+}
+
+sub clicker_grading_parameters {
+    return ('gradingmechanism' => 'scalar',
+            'upfiletype' => 'scalar',
+            'specificid' => 'scalar',
+            'pcorrect' => 'scalar',
+            'pincorrect' => 'scalar');
+}
+
+sub process_clicker {
+    my ($r)=@_;
+    my ($symb)=&get_symb($r);
+    if (!$symb) {return '';}
+    my $result=&checkforfile_js();
+    $env{'form.probTitle'} = &Apache::lonnet::gettitle($symb);
+    my ($table) = &showResourceInfo($symb,$env{'form.probTitle'});
+    $result.=$table;
+    $result.='<br /><table width="100%" border="0"><tr><td bgcolor="#777777">'."\n";
+    $result.='<table width="100%" border="0"><tr bgcolor="#e6ffff"><td>'."\n";
+    $result.='&nbsp;<b>'.&mt('Specify a file containing the clicker information for this resource').
+        '.</b></td></tr>'."\n";
+    $result.='<tr bgcolor=#ffffe6><td>'."\n";
+# Attempt to restore parameters from last session, set defaults if not present
+    my %Saveable_Parameters=&clicker_grading_parameters();
+    &Apache::loncommon::restore_course_settings('grades_clicker',
+                                                 \%Saveable_Parameters);
+    if (!$env{'form.pcorrect'}) { $env{'form.pcorrect'}=100; }
+    if (!$env{'form.pincorrect'}) { $env{'form.pincorrect'}=100; }
+    if (!$env{'form.gradingmechanism'}) { $env{'form.gradingmechanism'}='attendance'; }
+    if (!$env{'form.upfiletype'}) { $env{'form.upfiletype'}='iclicker'; }
+
+    my %checked;
+    foreach my $gradingmechanism ('attendance','personnel','specific') {
+       if ($env{'form.gradingmechanism'} eq $gradingmechanism) {
+          $checked{$gradingmechanism}="checked='checked'";
+       }
+    }
+
+    my $upload=&mt("Upload File");
+    my $type=&mt("Type");
+    my $attendance=&mt("Award points just for participation");
+    my $personnel=&mt("Correctness determined from response by course personnel");
+    my $specific=&mt("Correctness determined from response with clicker ID(s)"); 
+    my $pcorrect=&mt("Percentage points for correct solution");
+    my $pincorrect=&mt("Percentage points for incorrect solution");
+    my $selectform=&Apache::loncommon::select_form($env{'form.upfiletype'},'upfiletype',
+						   ('iclicker' => 'i>clicker',
+                                                    'interwrite' => 'interwrite PRS'));
+    $symb = &Apache::lonenc::check_encrypt($symb);
+    $result.=<<ENDUPFORM;
+<script type="text/javascript">
+function sanitycheck() {
+// Accept only integer percentages
+   document.forms.gradesupload.pcorrect.value=Math.round(document.forms.gradesupload.pcorrect.value);
+   document.forms.gradesupload.pincorrect.value=Math.round(document.forms.gradesupload.pincorrect.value);
+// Find out grading choice
+   for (i=0; i<document.forms.gradesupload.gradingmechanism.length; i++) {
+      if (document.forms.gradesupload.gradingmechanism[i].checked) {
+         gradingchoice=document.forms.gradesupload.gradingmechanism[i].value;
+      }
+   }
+// By default, new choice equals user selection
+   newgradingchoice=gradingchoice;
+// Not good to give more points for false answers than correct ones
+   if (Math.round(document.forms.gradesupload.pcorrect.value)<Math.round(document.forms.gradesupload.pincorrect.value)) {
+      document.forms.gradesupload.pcorrect.value=document.forms.gradesupload.pincorrect.value;
+   }
+// If new choice is attendance only, and old choice was correctness-based, restore defaults
+   if ((gradingchoice=='attendance') && (document.forms.gradesupload.waschecked.value!='attendance')) {
+      document.forms.gradesupload.pcorrect.value=100;
+      document.forms.gradesupload.pincorrect.value=100;
+   }
+// If the values are different, cannot be attendance only
+   if ((Math.round(document.forms.gradesupload.pcorrect.value)!=Math.round(document.forms.gradesupload.pincorrect.value)) &&
+       (gradingchoice=='attendance')) {
+       newgradingchoice='personnel';
+   }
+// Change grading choice to new one
+   for (i=0; i<document.forms.gradesupload.gradingmechanism.length; i++) {
+      if (document.forms.gradesupload.gradingmechanism[i].value==newgradingchoice) {
+         document.forms.gradesupload.gradingmechanism[i].checked=true;
+      } else {
+         document.forms.gradesupload.gradingmechanism[i].checked=false;
+      }
+   }
+// Remember the old state
+   document.forms.gradesupload.waschecked.value=newgradingchoice;
+}
+</script>
+<form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
+<input type="hidden" name="symb" value="$symb" />
+<input type="hidden" name="command" value="processclickerfile" />
+<input type="hidden" name="probTitle" value="$env{'form.probTitle'}" />
+<input type="hidden" name="saveState"  value="$env{'form.saveState'}" />
+<input type="file" name="upfile" size="50" />
+<br /><label>$type: $selectform</label>
+<br /><label><input type="radio" name="gradingmechanism" value="attendance" $checked{'attendance'} onClick="sanitycheck()" />$attendance </label>
+<br /><label><input type="radio" name="gradingmechanism" value="personnel" $checked{'personnel'} onClick="sanitycheck()" />$personnel</label>
+<br /><label><input type="radio" name="gradingmechanism" value="specific" $checked{'specific'} onClick="sanitycheck()" />$specific </label>
+<input type="text" name="specificid" value="$env{'form.specificid'}" size="20" />
+<input type="hidden" name="waschecked" value="$env{'form.gradingmechanism'}" />
+<br /><label>$pcorrect: <input type="text" name="pcorrect" size="4" value="$env{'form.pcorrect'}" onChange="sanitycheck()" /></label>
+<br /><label>$pincorrect: <input type="text" name="pincorrect" size="4" value="$env{'form.pincorrect'}" onChange="sanitycheck()" /></label>
+<br /><input type="button" onClick="javascript:checkUpload(this.form);" value="$upload" />
+</form>
+ENDUPFORM
+    $result.='</td></tr></table>'."\n".
+             '</td></tr></table><br /><br />'."\n";
+    $result.=&show_grading_menu_form($symb);
+    return $result;
+}
+
+sub process_clicker_file {
+    my ($r)=@_;
+    my ($symb)=&get_symb($r);
+    if (!$symb) {return '';}
+
+    my %Saveable_Parameters=&clicker_grading_parameters();
+    &Apache::loncommon::store_course_settings('grades_clicker',
+                                              \%Saveable_Parameters);
+
+    my ($result) = &showResourceInfo($symb,$env{'form.probTitle'});
+    if (($env{'form.gradingmechanism'} eq 'specific') && ($env{'form.specificid'}!~/\w/)) {
+	$result.='<span class="LC_error">'.&mt('You need to specify a clicker ID for the correct answer').'</span>';
+	return $result.&show_grading_menu_form($symb);
+    }
+    my %clicker_ids=&gather_clicker_ids();
+    my %correct_ids;
+    if ($env{'form.gradingmechanism'} eq 'personnel') {
+	%correct_ids=&gather_adv_clicker_ids();
+    }
+    if ($env{'form.gradingmechanism'} eq 'specific') {
+	foreach my $correct_id (split(/[\s\,]/,$env{'form.specificid'})) {;
+	   $correct_id=~tr/a-z/A-Z/;
+	   $correct_id=~s/\s//gs;
+	   $correct_id=~s/^[\#0]+//;
+           $correct_id=~s/[\-\:]//g;
+           if ($correct_id) {
+	      $correct_ids{$correct_id}='specified';
+           }
+        }
+    }
+    if ($env{'form.gradingmechanism'} eq 'attendance') {
+	$result.=&mt('Score based on attendance only');
     } else {
-      $request->print("Unknown action:$command:");
+	my $number=0;
+	$result.='<p><b>'.&mt('Correctness determined by the following IDs').'</b>';
+	foreach my $id (sort(keys(%correct_ids))) {
+	    $result.='<br /><tt>'.$id.'</tt> - ';
+	    if ($correct_ids{$id} eq 'specified') {
+		$result.=&mt('specified');
+	    } else {
+		my ($uname,$udom)=split(/\:/,$correct_ids{$id});
+		$result.=&Apache::loncommon::plainname($uname,$udom);
+	    }
+	    $number++;
+	}
+        $result.="</p>\n";
+	if ($number==0) {
+	    $result.='<span class="LC_error">'.&mt('No IDs found to determine correct answer').'</span>';
+	    return $result.&show_grading_menu_form($symb);
+	}
     }
-  }
-  &send_footer($request);
-  return OK;
+    if (length($env{'form.upfile'}) < 2) {
+        $result.=&mt('[_1] Error: [_2] The file you attempted to upload, [_3] contained no information. Please check that you entered the correct filename.',
+		     '<span class="LC_error">',
+		     '</span>',
+		     '<span class="LC_filename">'.&HTML::Entities::encode($env{'form.upfile.filename'},'<>&"').'</span>');
+        return $result.&show_grading_menu_form($symb);
+    }
+
+# Were able to get all the info needed, now analyze the file
+
+    $result.=&Apache::loncommon::studentbrowser_javascript();
+    $symb = &Apache::lonenc::check_encrypt($symb);
+    my $heading=&mt('Scanning clicker file');
+    $result.=(<<ENDHEADER);
+<br /><table width="100%" border="0"><tr><td bgcolor="#777777">
+<table width="100%" border="0"><tr bgcolor="#e6ffff"><td>
+<b>$heading</b></td></tr><tr bgcolor=#ffffe6><td>
+<form method="post" action="/adm/grades" name="clickeranalysis">
+<input type="hidden" name="symb" value="$symb" />
+<input type="hidden" name="command" value="assignclickergrades" />
+<input type="hidden" name="probTitle" value="$env{'form.probTitle'}" />
+<input type="hidden" name="saveState"  value="$env{'form.saveState'}" />
+<input type="hidden" name="gradingmechanism" value="$env{'form.gradingmechanism'}" />
+<input type="hidden" name="pcorrect" value="$env{'form.pcorrect'}" />
+<input type="hidden" name="pincorrect" value="$env{'form.pincorrect'}" />
+ENDHEADER
+    my %responses;
+    my @questiontitles;
+    my $errormsg='';
+    my $number=0;
+    if ($env{'form.upfiletype'} eq 'iclicker') {
+	($errormsg,$number)=&iclicker_eval(\@questiontitles,\%responses);
+    }
+    if ($env{'form.upfiletype'} eq 'interwrite') {
+        ($errormsg,$number)=&interwrite_eval(\@questiontitles,\%responses);
+    }
+    $result.='<br />'.&mt('Found [_1] question(s)',$number).'<br />'.
+             '<input type="hidden" name="number" value="'.$number.'" />'.
+             &mt('Awarding [_1] percent for corrion(s)',$number).'<br />'.
+             '<input type="hidden" name="number" value="'.$number.'" />'.
+             &mt('Awarding [_1] percent for correct and [_2] percent for incorrect responses',
+                 $env{'form.pcorrect'},$env{'form.pincorrect'}).
+             '<br />';
+# Remember Question Titles
+# FIXME: Possibly need delimiter other than ":"
+    for (my $i=0;$i<$number;$i++) {
+        $result.='<input type="hidden" name="question:'.$i.'" value="'.
+                 &HTML::Entities::encode($questiontitles[$i],'"&<>').'" />';
+    }
+    my $correct_count=0;
+    my $student_count=0;
+    my $unknown_count=0;
+# Match answers with usernames
+# FIXME: Possibly need delimiter other than ":"
+    foreach my $id (keys(%responses)) {
+       if ($correct_ids{$id}) {
+          $result.="\n".'<input type="hidden" name="correct:'.$correct_count.':'.$correct_ids{$id}.'" value="'.$responses{$id}.'" />';
+          $correct_count++;
+       } elsif ($clicker_ids{$id}) {
+          if ($clicker_ids{$id}=~/\,/) {
+# More than one user with the same clicker!
+             $result.="\n<hr />".&mt('Clicker registered more than once').": <tt>".$id."</tt><br />";
+             $result.="\n".'<input type="hidden" name="unknown:'.$id.'" value="'.$responses{$id}.'" />'.
+                           "<select name='multi".$id."'>";
+             foreach my $reguser (sort(split(/\,/,$clicker_ids{$id}))) {
+                 $result.="<option value='".$reguser."'>".&Apache::loncommon::plainname(split(/\:/,$reguser)).' ('.$reguser.')</option>';
+             }
+             $result.='</select>';
+             $unknown_count++;
+          } else {
+# Good: found one and only one user with the right clicker
+             $result.="\n".'<input type="hidden" name="student:'.$clicker_ids{$id}.'" value="'.$responses{$id}.'" />';
+             $student_count++;
+          }
+       } else {
+          $result.="\n<hr />".&mt('Unregistered Clicker')." <tt>".$id."</tt><br />";
+          $result.="\n".'<input type="hidden" name="unknown:'.$id.'" value="'.$responses{$id}.'" />'.
+                   "\n".&mt("Username").": <input type='text' name='uname".$id."' />&nbsp;".
+                   "\n".&mt("Domain").": ".
+                   &Apache::loncommon::select_dom_form($env{'course.'.$env{'request.course.id'}.'.domain'},'udom'.$id).'&nbsp;'.
+                   &Apache::loncommon::selectstudent_link('clickeranalysis','uname'.$id,'udom'.$id);
+          $unknown_count++;
+       }
+    }
+    $result.='<hr />'.
+             &mt('Found [_1] registered and [_2] unregistered clickers.',$student_count,$unknown_count);
+    if ($env{'form.gradingmechanism'} ne 'attendance') {
+       if ($correct_count==0) {
+          $errormsg.="Found no correct answers answers for grading!";
+       } elsif ($correct_count>1) {
+          $result.='<br /><span class="LC_warning">'.&mt("Found [_1] entries for grading!",$correct_count).'</span>';
+       }
+    }
+    if ($number<1) {
+       $errormsg.="Found no questions.";
+    }
+    if ($errormsg) {
+       $result.='<br /><span class="LC_error">'.&mt($errormsg).'</span>';
+    } else {
+       $result.='<br /><input type="submit" name="finalize" value="'.&mt('Finalize Grading').'" />';
+    }
+    $result.='</form></td></tr></table>'."\n".
+             '</td></tr></table><br /><br />'."\n";
+    return $result.&show_grading_menu_form($symb);
+}
+
+sub iclicker_eval {
+    my ($questiontitles,$responses)=@_;
+    my $number=0;
+    my $errormsg='';
+    foreach my $line (split(/[\n\r]/,$env{'form.upfile'})) {
+        my %components=&Apache::loncommon::record_sep($line);
+        my @entries=map {$components{$_}} (sort(keys(%components)));
+	if ($entries[0] eq 'Question') {
+	    for (my $i=3;$i<$#entries;$i+=6) {
+		$$questiontitles[$number]=$entries[$i];
+		$number++;
+	    }
+	}
+	if ($entries[0]=~/^\#/) {
+	    my $id=$entries[0];
+	    my @idresponses;
+	    $id=~s/^[\#0]+//;
+	    for (my $i=0;$i<$number;$i++) {
+		my $idx=3+$i*6;
+		push(@idresponses,$entries[$idx]);
+	    }
+	    $$responses{$id}=join(',',@idresponses);
+	}
+    }
+    return ($errormsg,$number);
+}
+
+sub interwrite_eval {
+    my ($questiontitles,$responses)=@_;
+    my $number=0;
+    my $errormsg='';
+    my $skipline=1;
+    my $questionnumber=0;
+    my %idresponses=();
+    foreach my $line (split(/[\n\r]/,$env{'form.upfile'})) {
+        my %components=&Apache::loncommon::record_sep($line);
+        my @entries=map {$components{$_}} (sort(keys(%components)));
+        if ($entries[1] eq 'Time') { $skipline=0; next; }
+        if ($entries[1] eq 'Response') { $skipline=1; }
+        next if $skipline;
+        if ($entries[0]!=$questionnumber) {
+           $questionnumber=$entries[0];
+           $$questiontitles[$number]=&mt('Question [_1]',$questionnumber);
+           $number++;
+        }
+        my $id=$entries[4];
+        $id=~s/^[\#0]+//;
+        $id=~s/^v\d*\://i;
+        $id=~s/[\-\:]//g;
+        $idresponses{$id}[$number]=$entries[6];
+    }
+    foreach my $id (keys %idresponses) {
+       $$responses{$id}=join(',',@{$idresponses{$id}});
+       $$responses{$id}=~s/^\s*\,//;
+    }
+    return ($errormsg,$number);
+}
+
+sub assign_clicker_grades {
+    my ($r)=@_;
+    my ($symb)=&get_symb($r);
+    if (!$symb) {return '';}
+# See which part we are saving to
+    my ($partlist,$handgrade,$responseType) = &response_type($symb);
+# FIXME: This should probably look for the first handgradeable part
+    my $part=$$partlist[0];
+# Start screen output
+    my ($result) = &showResourceInfo($symb,$env{'form.probTitle'});
+
+    my $heading=&mt('Assigning grades based on clicker file');
+    $result.=(<<ENDHEADER);
+<br /><table width="100%" border="0"><tr><td bgcolor="#777777">
+<table width="100%" border="0"><tr bgcolor="#e6ffff"><td>
+<b>$heading</b></td></tr><tr bgcolor=#ffffe6><td>
+ENDHEADER
+# Get correct result
+# FIXME: Possibly need delimiter other than ":"
+    my @correct=();
+    my $gradingmechanism=$env{'form.gradingmechanism'};
+    my $number=$env{'form.number'};
+    if ($gradingmechanism ne 'attendance') {
+       foreach my $key (keys(%env)) {
+          if ($key=~/^form\.correct\:/) {
+             my @input=split(/\,/,$env{$key});
+             for (my $i=0;$i<=$#input;$i++) {
+                 if (($correct[$i]) && ($input[$i]) &&
+                     ($correct[$i] ne $input[$i])) {
+                    $result.='<br /><span class="LC_warning">'.
+                             &mt('More than one correct result given for question "[_1]": [_2] versus [_3].',
+                                 $env{'form.question:'.$i},$correct[$i],$input[$i]).'</span>';
+                 } elsif ($input[$i]) {
+                    $correct[$i]=$input[$i];
+                 }
+             }
+          }
+       }
+       for (my $i=0;$i<$number;$i++) {
+          if (!$correct[$i]) {
+             $result.='<br /><span class="LC_error">'.
+                      &mt('No correct result given for question "[_1]"!',
+                          $env{'form.question:'.$i}).'</span>';
+          }
+       }
+       $result.='<br />'.&mt("Correct answer: [_1]",join(', ',map { ($_?$_:'-') } @correct));
+    }
+# Start grading
+    my $pcorrect=$env{'form.pcorrect'};
+    my $pincorrect=$env{'form.pincorrect'};
+    my $storecount=0;
+    foreach my $key (keys(%env)) {
+       my $user='';
+       if ($key=~/^form\.student\:(.*)$/) {
+          $user=$1;
+       }
+       if ($key=~/^form\.unknown\:(.*)$/) {
+          my $id=$1;
+          if (($env{'form.uname'.$id}) && ($env{'form.udom'.$id})) {
+             $user=$env{'form.uname'.$id}.':'.$env{'form.udom'.$id};
+          } elsif ($env{'form.multi'.$id}) {
+             $user=$env{'form.multi'.$id};
+          }
+       }
+       if ($user) { 
+          my @answer=split(/\,/,$env{$key});
+          my $sum=0;
+          for (my $i=0;$i<$number;$i++) {
+             if ($answer[$i]) {
+                if ($gradingmechanism eq 'attendance') {
+                   $sum+=$pcorrect;
+                } else {
+                   if ($answer[$i] eq $correct[$i]) {
+                      $sum+=$pcorrect;
+                   } else {
+                      $sum+=$pincorrect;
+                   }
+                }
+             }
+          }
+          my $ave=$sum/(100*$number);
+# Store
+          my ($username,$domain)=split(/\:/,$user);
+          my %grades=();
+          $grades{"resource.$part.solved"}='correct_by_override';
+          $grades{"resource.$part.awarded"}=$ave;
+          $grades{"resource.regrader"}="$env{'user.name'}:$env{'user.domain'}";
+          my $returncode=&Apache::lonnet::cstore(\%grades,$symb,
+                                                 $env{'request.course.id'},
+                                                 $domain,$username);
+          if ($returncode ne 'ok') {
+             $result.="<br /><span class=\"LC_error\">Failed to save student $username:$domain. Message when trying to save was ($returncode)</span>";
+          } else {
+             $storecount++;
+          }
+       }
+    }
+# We are done
+    $result.='<br />'.&mt('Successfully stored grades for [_1] student(s).',$storecount).
+             '</td></tr></table>'."\n".
+             '</td></tr></table><br /><br />'."\n";
+    return $result.&show_grading_menu_form($symb);
+}
+
+sub handler {
+    my $request=$_[0];
+    &reset_caches();
+    if ($env{'browser.mathml'}) {
+	&Apache::loncommon::content_type($request,'text/xml');
+    } else {
+	&Apache::loncommon::content_type($request,'text/html');
+    }
+    $request->send_http_header;
+    return '' if $request->header_only;
+    &Apache::loncommon::get_unprocessed_cgi($ENV{'QUERY_STRING'});
+    my $symb=&get_symb($request,1);
+    my @commands=&Apache::loncommon::get_env_multiple('form.command');
+    my $command=$commands[0];
+
+    if ($#commands > 0) {
+	&Apache::lonnet::logthis("grades got multiple commands ".join(':',@commands));
+    }
+
+
+    $request->print(&Apache::loncommon::start_page('Grading'));
+    if ($symb eq '' && $command eq '') {
+	if ($env{'user.adv'}) {
+	    if (($env{'form.codeone'}) && ($env{'form.codetwo'}) &&
+		($env{'form.codethree'})) {
+		my $token=$env{'form.codeone'}.'*'.$env{'form.codetwo'}.'*'.
+		    $env{'form.codethree'};
+		my ($tsymb,$tuname,$tudom,$tcrsid)=
+		    &Apache::lonnet::checkin($token);
+		if ($tsymb) {
+		    my ($map,$id,$url)=&Apache::lonnet::decode_symb($tsymb);
+		    if (&Apache::lonnet::allowed('mgr',$tcrsid)) {
+			$request->print(&Apache::lonnet::ssi_body('/res/'.$url,
+					  ('grade_username' => $tuname,
+					   'grade_domain' => $tudom,
+					   'grade_courseid' => $tcrsid,
+					   'grade_symb' => $tsymb)));
+		    } else {
+			$request->print('<h3>Not authorized: '.$token.'</h3>');
+		    }
+		} else {
+		    $request->print('<h3>Not a valid DocID: '.$token.'</h3>');
+		}
+	    } else {
+		$request->print(&Apache::lonxml::tokeninputfield());
+	    }
+	}
+    } else {
+	&init_perm();
+	if ($command eq 'submission' && $perm{'vgr'}) {
+	    ($env{'form.student'} eq '' ? &listStudents($request) : &submission($request,0,0));
+	} elsif ($command eq 'pickStudentPage' && $perm{'vgr'}) {
+	    &pickStudentPage($request);
+	} elsif ($command eq 'displayPage' && $perm{'vgr'}) {
+	    &displayPage($request);
+	} elsif ($command eq 'gradeByPage' && $perm{'mgr'}) {
+	    &updateGradeByPage($request);
+	} elsif ($command eq 'processGroup' && $perm{'vgr'}) {
+	    &processGroup($request);
+	} elsif ($command eq 'gradingmenu' && $perm{'vgr'}) {
+	    $request->print(&grading_menu($request));
+	} elsif ($command eq 'submit_options' && $perm{'vgr'}) {
+	    $request->print(&submit_options($request));
+	} elsif ($command eq 'viewgrades' && $perm{'vgr'}) {
+	    $request->print(&viewgrades($request));
+	} elsif ($command eq 'handgrade' && $perm{'mgr'}) {
+	    $request->print(&processHandGrade($request));
+	} elsif ($command eq 'editgrades' && $perm{'mgr'}) {
+	    $request->print(&editgrades($request));
+	} elsif ($command eq 'verify' && $perm{'vgr'}) {
+	    $request->print(&verifyreceipt($request));
+        } elsif ($command eq 'processclicker' && $perm{'mgr'}) {
+            $request->print(&process_clicker($request));
+        } elsif ($command eq 'processclickerfile' && $perm{'mgr'}) {
+            $request->print(&process_clicker_file($request));
+        } elsif ($command eq 'assignclickergrades' && $perm{'mgr'}) {
+            $request->print(&assign_clicker_grades($request));
+	} elsif ($command eq 'csvform' && $perm{'mgr'}) {
+	    $request->print(&upcsvScores_form($request));
+	} elsif ($command eq 'csvupload' && $perm{'mgr'}) {
+	    $request->print(&csvupload($request));
+	} elsif ($command eq 'csvuploadmap' && $perm{'mgr'} ) {
+	    $request->print(&csvuploadmap($request));
+	} elsif ($command eq 'csvuploadoptions' && $perm{'mgr'}) {
+	    if ($env{'form.associate'} ne 'Reverse Association') {
+		$request->print(&csvuploadoptions($request));
+	    } else {
+		if ( $env{'form.upfile_associate'} ne 'reverse' ) {
+		    $env{'form.upfile_associate'} = 'reverse';
+		} else {
+		    $env{'form.upfile_associate'} = 'forward';
+		}
+		$request->print(&csvuploadmap($request));
+	    }
+	} elsif ($command eq 'csvuploadassign' && $perm{'mgr'} ) {
+	    $request->print(&csvuploadassign($request));
+	} elsif ($command eq 'scantron_selectphase' && $perm{'mgr'}) {
+	    $request->print(&scantron_selectphase($request));
+ 	} elsif ($command eq 'scantron_warning' && $perm{'mgr'}) {
+ 	    $request->print(&scantron_do_warning($request));
+	} elsif ($command eq 'scantron_validate' && $perm{'mgr'}) {
+	    $request->print(&scantron_validate_file($request));
+	} elsif ($command eq 'scantron_process' && $perm{'mgr'}) {
+	    $request->print(&scantron_process_students($request));
+ 	} elsif ($command eq 'scantronupload' && 
+ 		 (&Apache::lonnet::allowed('usc',$env{'request.role.domain'})||
+		  &Apache::lonnet::allowed('usc',$env{'request.course.id'}))) {
+ 	    $request->print(&scantron_upload_scantron_data($request)); 
+ 	} elsif ($command eq 'scantronupload_save' &&
+ 		 (&Apache::lonnet::allowed('usc',$env{'request.role.domain'})||
+		  &Apache::lonnet::allowed('usc',$env{'request.course.id'}))) {
+ 	    $request->print(&scantron_upload_scantron_data_save($request));
+ 	} elsif ($command eq 'scantron_download' &&
+		 &Apache::lonnet::allowed('usc',$env{'request.course.id'})) {
+ 	    $request->print(&scantron_download_scantron_data($request));
+	} elsif ($command) {
+	    $request->print("Access Denied ($command)");
+	}
+    }
+    $request->print(&Apache::loncommon::end_page());
+    &reset_caches();
+    return '';
 }
 
 1;