--- loncom/homework/grades.pm	2009/04/15 17:02:35	1.561
+++ loncom/homework/grades.pm	2010/03/11 16:29:42	1.597
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # The LON-CAPA Grading handler
 #
-# $Id: grades.pm,v 1.561 2009/04/15 17:02:35 bisitz Exp $
+# $Id: grades.pm,v 1.597 2010/03/11 16:29:42 wenzelju Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -97,9 +97,15 @@ sub ssi_print_error {
 #
 # --- Retrieve the parts from the metadata file.---
 sub getpartlist {
-    my ($symb) = @_;
+    my ($symb,$errorref) = @_;
 
     my $navmap   = Apache::lonnavmaps::navmap->new();
+    unless (ref($navmap)) {
+        if (ref($errorref)) { 
+            $$errorref = 'navmap';
+            return;
+        }
+    }
     my $res      = $navmap->getBySymb($symb);
     my $partlist = $res->parts();
     my $url      = $res->src();
@@ -144,10 +150,20 @@ sub nameUserString {
 #--- Get the partlist and the response type for a given problem. ---
 #--- Indicate if a response type is coded handgraded or not. ---
 sub response_type {
-    my ($symb) = shift;
+    my ($symb,$response_error) = @_;
 
     my $navmap = Apache::lonnavmaps::navmap->new();
+    unless (ref($navmap)) {
+        if (ref($response_error)) {
+            $$response_error = 1;
+        }
+        return;
+    }
     my $res = $navmap->getBySymb($symb);
+    unless (ref($res)) {
+        $$response_error = 1;
+        return;
+    }
     my $partlist = $res->parts();
     my %vPart = 
 	map { $_ => 1 } (&Apache::loncommon::get_env_multiple('form.vPart'));
@@ -183,7 +199,8 @@ sub get_display_part {
     my ($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>)";
+        $display.= ' (<span class="LC_internal_info">'
+                  .&mt('Part ID: [_1]',$partID).'</span>)';
     } else {
 	$display=$partID;
     }
@@ -193,37 +210,49 @@ sub get_display_part {
 #--- Show resource title
 #--- and parts and response type
 sub showResourceInfo {
-    my ($symb,$probTitle,$checkboxes) = @_;
-    my $col=3;
-    if ($checkboxes) { $col=4; }
+    my ($symb,$probTitle,$checkboxes,$res_error) = @_;
     my $result = '<h3>'.&mt('Current Resource').': '.$probTitle.'</h3>'."\n";
-    $result .='<table border="0">';
-    my ($partlist,$handgrade,$responseType) = &response_type($symb);
+    my ($partlist,$handgrade,$responseType) = &response_type($symb,$res_error);
+    if (ref($res_error)) {
+        if ($$res_error) {
+            return;
+        }
+    }
+    $result.=&Apache::loncommon::start_data_table()
+            .&Apache::loncommon::start_data_table_header_row();
+    if ($checkboxes) {
+        $result.='<th>&nbsp;</th>';
+    }
+    $result.='<th>'.&mt('Problem Part').'</th>'
+            .'<th>'.&mt('Res. ID').'</th>'
+            .'<th>'.&mt('Type').'</th>'
+            .&Apache::loncommon::end_data_table_header_row();
     my %resptype = ();
     my $hdgrade='no';
     my %partsseen;
     foreach my $partID (sort(keys(%$responseType))) {
-	foreach my $resID (sort(keys(%{ $responseType->{$partID} }))) {
-	    my $handgrade=$$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);
-	    $result.='<td><b>'.&mt('Part').': </b>'.$display_part.
-                ' <span class="LC_internal_info">'.$resID.'</span></td>'.
-		'<td><b>'.&mt('Type').': </b>'.$responsetype.'</td></tr>';
-#	    '<td>'.&mt('<b>Handgrade: </b>[_1]',$handgrade).'</td></tr>';
-	}
+        foreach my $resID (sort(keys(%{ $responseType->{$partID} }))) {
+            my $handgrade=$$handgrade{$partID.'_'.$resID};
+            my $responsetype = $responseType->{$partID}->{$resID};
+            $hdgrade = $handgrade if ($handgrade eq 'yes');
+            $result.=&Apache::loncommon::start_data_table_row();
+            if ($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);
+            $result.='<td>'.$display_part.'</td>'
+                    .'<td>'.'<span class="LC_internal_info">'.$resID.'</span></td>'
+                    .'<td>'.&mt($responsetype).'</td>'
+#                   .'<td>'.&mt('<b>Handgrade: </b>[_1]',$handgrade).'</td>'
+                    .&Apache::loncommon::end_data_table_row();
+        }
     }
-    $result.='</table>'."\n";
+    $result.=&Apache::loncommon::end_data_table();
     return $result,$responseType,$hdgrade,$partlist,$handgrade;
 }
 
@@ -396,7 +425,7 @@ sub cleanRecord {
 	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>';
+	    $bottomrow.'</tr>'.'</table></blockquote>';
     } elsif ($response eq 'essay') {
 	if (! exists ($env{'form.'.$symb})) {
 	    my (%keyhash) = &Apache::lonnet::dump('nohist_handgrade',
@@ -458,8 +487,7 @@ sub cleanRecord {
 #-- A couple of common js functions
 sub commonJSfunctions {
     my $request = shift;
-    $request->print(<<COMMONJSFUNCTIONS);
-<script type="text/javascript" language="javascript">
+    $request->print(&Apache::lonhtmlcommon::scripttag(<<COMMONJSFUNCTIONS));
     function radioSelection(radioButton) {
 	var selection=null;
 	if (radioButton.length > 1) {
@@ -487,7 +515,6 @@ sub commonJSfunctions {
 	    return selectOne.value;
 	}
     }
-</script>
 COMMONJSFUNCTIONS
 }
 
@@ -642,13 +669,13 @@ sub student_gradeStatus {
 sub jscriptNform {
     my ($symb) = @_;
     my $stu_status = join(':',&Apache::loncommon::get_env_multiple('form.Status'));
-    my $jscript='<script type="text/javascript" language="javascript">'."\n".
+    my $jscript= &Apache::lonhtmlcommon::scripttag(
 	'    function viewOneStudent(user,domain) {'."\n".
 	'	document.onestudent.student.value = user;'."\n".
 	'	document.onestudent.userdom.value = domain;'."\n".
 	'	document.onestudent.submit();'."\n".
 	'    }'."\n".
-	'</script>'."\n";
+	"\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".
@@ -754,7 +781,7 @@ sub verifyreceipt {
 
     my $title.=
 	'<h3><span class="LC_info">'.
-	&mt('Verifying  Receipt No. [_1]',$receipt).
+	&mt('Verifying Receipt No. [_1]',$receipt).
 	'</span></h3>'."\n".
 	'<h4>'.&mt('<b>Resource: </b>[_1]',$env{'form.probTitle'}).
 	'</h4>'."\n";
@@ -766,7 +793,13 @@ sub verifyreceipt {
     if ($env{"course.$courseid.receiptalg"} eq 'receipt2' ||
 	$env{"course.$courseid.receiptalg"} eq 'receipt3') { $receiptparts=1; }
     my $parts=['0'];
-    if ($receiptparts) { ($parts)=&response_type($symb); }
+    if ($receiptparts) {
+        my $res_error; 
+        ($parts)=&response_type($symb,\$res_error);
+        if ($res_error) {
+            return &navmap_errormsg();
+        } 
+    }
     
     my $header = 
 	&Apache::loncommon::start_data_table().
@@ -808,11 +841,14 @@ sub verifyreceipt {
 	}
     }
     if ($matches == 0) {
-	$string = $title.&mt('No match found for the above receipt.');
+        $string = $title
+                 .'<p class="LC_warning">'
+                 .&mt('No match found for the above receipt number.')
+                 .'</p>';
     } else {
 	$string = &jscriptNform($symb).$title.
 	    '<p>'.
-	    &mt('The above receipt matches the following [numerate,_1,student].',$matches).
+	    &mt('The above receipt number matches the following [quant,_1,student].',$matches).
 	    '</p>'.
 	    $header.
 	    $contents.
@@ -848,8 +884,7 @@ sub listStudents {
 		'multiple' => 'Please select a student or group of students before clicking on the Next button.',
 		'single'   => 'Please select the student before clicking on the Next button.',
 	     );
-    $request->print(<<LISTJAVASCRIPT);
-<script type="text/javascript" language="javascript">
+    $request->print(&Apache::lonhtmlcommon::scripttag(<<LISTJAVASCRIPT));
     function checkSelect(checkBox) {
 	var ctr=0;
 	var sense="";
@@ -878,7 +913,6 @@ sub listStudents {
 	formname.command.value = 'submission';
 	formname.submit();
     }
-</script>
 LISTJAVASCRIPT
 
     &commonJSfunctions($request);
@@ -910,10 +944,18 @@ LISTJAVASCRIPT
     my $saveStatus = $stu_status eq '' ? 'Active' : $stu_status;
     $env{'form.Status'} = $saveStatus;
     $submission_options.=
-	'<label><input type="radio" name="lastSub" value="lastonly" '.$checklastsub.' /> '.&mt('last submission only').' </label>'."\n".
-	'<label><input type="radio" name="lastSub" value="last" /> '.&mt('last submission &amp; parts info').' </label>'."\n".
-	'<label><input type="radio" name="lastSub" value="datesub" /> '.&mt('by dates and submissions').' </label>'."\n".
-	'<label><input type="radio" name="lastSub" value="all" /> '.&mt('all details').'</label>';
+        '<span class="LC_nobreak">'.
+        '<label><input type="radio" name="lastSub" value="lastonly" '.$checklastsub.' /> '.
+        &mt('last submission only').' </label></span>'."\n".
+        '<span class="LC_nobreak">'.
+        '<label><input type="radio" name="lastSub" value="last" /> '.
+        &mt('last submission &amp; parts info').' </label></span>'."\n".
+        '<span class="LC_nobreak">'.
+        '<label><input type="radio" name="lastSub" value="datesub" /> '.
+        &mt('by dates and submissions').'</label></span>'."\n".
+        '<span class="LC_nobreak">'.
+        '<label><input type="radio" name="lastSub" value="all" /> '.
+        &mt('all details').'</label></span>';
     $gradeTable .= &Apache::lonhtmlcommon::row_title(&mt('Submissions'))
                   .$submission_options
                   .&Apache::lonhtmlcommon::row_closure();
@@ -959,8 +1001,8 @@ LISTJAVASCRIPT
 # checkall buttons
     $gradeTable.=&check_script('gradesub', 'stuinfo');
     $gradeTable.='<input type="button" '."\n".
-	'onClick="javascript:checkSelect(this.form.stuinfo);" '."\n".
-	'value="'.&mt('Next').' &rarr;" /> <br />'."\n";
+        'onclick="javascript:checkSelect(this.form.stuinfo);" '."\n".
+        'value="'.&mt('Next').' &rarr;" /> <br />'."\n";
     $gradeTable.=&check_buttons();
     my ($classlist, undef, $fullname) = &getclasslist($getsec,'1',$getgroup);
     $gradeTable.= &Apache::loncommon::start_data_table().
@@ -1044,7 +1086,7 @@ LISTJAVASCRIPT
 		$gradeTable.= &Apache::loncommon::start_data_table_row();
 	    }
 	    $gradeTable.='<td align="right">'.$ctr.'&nbsp;</td>'.
-               '<td align="center"><label><input type=checkbox name="stuinfo" value="'.
+               '<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).
@@ -1077,9 +1119,9 @@ LISTJAVASCRIPT
     }
 
     $gradeTable.=&Apache::loncommon::end_data_table()."\n".
-	'<input type="button" '.
-	'onClick="javascript:checkSelect(this.form.stuinfo);" '.
-	'value="'.&mt('Next').' &rarr;" /></form>'."\n";
+        '<input type="button" '.
+        'onclick="javascript:checkSelect(this.form.stuinfo);" '.
+        'value="'.&mt('Next').' &rarr;" /></form>'."\n";
     if ($ctr == 0) {
 	my $num_students=(scalar(keys(%$fullname)));
 	if ($num_students eq 0) {
@@ -1106,7 +1148,7 @@ LISTJAVASCRIPT
 
 sub check_script {
     my ($form, $type)=@_;
-    my $chkallscript='<script type="text/javascript">
+    my $chkallscript= &Apache::lonhtmlcommon::scripttag('
     function checkall() {
         for (i=0; i<document.forms.'.$form.'.elements.length; i++) {
             ele = document.forms.'.$form.'.elements[i];
@@ -1137,7 +1179,7 @@ sub check_script {
         }
     }
 
-</script>'."\n";
+'."\n");
     return $chkallscript;
 }
 
@@ -1176,8 +1218,7 @@ sub processGroup {
 sub sub_page_js {
     my $request = shift;
 	    my $alertmsg = &mt('A number equal or greater than 0 is expected. Entered value = ');
-    $request->print(<<SUBJAVASCRIPT);
-<script type="text/javascript" language="javascript">
+    $request->print(&Apache::lonhtmlcommon::scripttag(<<SUBJAVASCRIPT));
     function updateRadio(formname,id,weight) {
 	var gradeBox = formname["GD_BOX"+id];
 	var radioButton = formname["RADVAL"+id];
@@ -1345,7 +1386,6 @@ sub sub_page_js {
 
 	formname.submit();
     }
-</script>
 SUBJAVASCRIPT
 }
 
@@ -1355,8 +1395,7 @@ sub sub_page_kw_js {
     my $iconpath = $request->dir_config('lonIconsURL');
     &commonJSfunctions($request);
 
-    my $inner_js_msg_central=<<INNERJS;
-    <script text="text/javascript">
+    my $inner_js_msg_central= &Apache::lonhtmlcommon::scripttag(<<INNERJS);
     function checkInput() {
       opener.document.SCORE.msgsub.value = opener.checkEntities(document.msgcenter.msgsub.value);
       var nmsg   = opener.document.SCORE.savemsgN.value;
@@ -1393,11 +1432,9 @@ sub sub_page_kw_js {
       self.close()
 
     }
-    </script>
 INNERJS
 
-    my $inner_js_highlight_central=<<INNERJS;
- <script type="text/javascript">
+    my $inner_js_highlight_central= &Apache::lonhtmlcommon::scripttag(<<INNERJS);
     function updateChoice(flag) {
       opener.document.SCORE.kwclr.value = opener.radioSelection(document.hlCenter.kwdclr);
       opener.document.SCORE.kwsize.value = opener.radioSelection(document.hlCenter.kwdsize);
@@ -1408,7 +1445,6 @@ INNERJS
       }
       self.close()
     }
-</script>
 INNERJS
 
     my $start_page_msg_central = 
@@ -1432,8 +1468,7 @@ INNERJS
     my $docopen=&Apache::lonhtmlcommon::javascript_docopen();
     $docopen=~s/^document\.//;
     my $alertmsg = &mt('Please select a word or group of words from document and then click this link.');
-    $request->print(<<SUBJAVASCRIPT);
-<script type="text/javascript" language="javascript">
+    $request->print(&Apache::lonhtmlcommon::scripttag(<<SUBJAVASCRIPT));
 
 //===================== Show list of keywords ====================
   function keywords(formname) {
@@ -1551,8 +1586,8 @@ INNERJS
     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('<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) {
@@ -1583,8 +1618,8 @@ INNERJS
     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("<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();
@@ -1636,8 +1671,8 @@ INNERJS
     hDoc.write("<form action=\\"inactive\\" name=\\"hlCenter\\">");
     hDoc.write("<h3><span class=\\"LC_info\\">&nbsp;Keyword Highlight Options<\\/span><\\/h3><br /><br />");
 
-    hDoc.write("<table border=0 width=100%><tr><td bgcolor=\\"#777777\\">");
-    hDoc.write("<table border=0 width=100%><tr bgcolor=\\"#ddffff\\">");
+    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>");
   }
 
@@ -1657,14 +1692,13 @@ INNERJS
     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("<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
 }
 
@@ -1677,6 +1711,25 @@ sub get_increment {
     return $increment;
 }
 
+sub gradeBox_start {
+    return (
+        &Apache::loncommon::start_data_table()
+       .&Apache::loncommon::start_data_table_header_row()
+       .'<th>'.&mt('Part').'</th>'
+       .'<th>'.&mt('Points').'</th>'
+       .'<th>&nbsp;</th>'
+       .'<th>'.&mt('Assign Grade').'</th>'
+       .'<th>'.&mt('Weight').'</th>'
+       .'<th>'.&mt('Grade Status').'</th>'
+       .&Apache::loncommon::end_data_table_header_row()
+    );
+}
+
+sub gradeBox_end {
+    return (
+        &Apache::loncommon::end_data_table()
+    );
+}
 #--- displays the grading box, used in essay type problem and grading by page/sequence
 sub gradeBox {
     my ($request,$symb,$uname,$udom,$counter,$partid,$record) = @_;
@@ -1696,7 +1749,7 @@ sub gradeBox {
     if ($last_resets{$partid}) {
         $aggtries = &get_num_tries($record,$last_resets{$partid},$partid);
     }
-    $result.='<table border="0"><tr>';
+    $result.=&Apache::loncommon::start_data_table_row();
     my $ctr = 0;
     my $thisweight = 0;
     my $increment = &get_increment();
@@ -1704,7 +1757,7 @@ sub gradeBox {
     my $radio.='<table border="0"><tr>'."\n";  # display radio buttons in a nice table 10 across
     while ($thisweight<=$wgt) {
 	$radio.= '<td><span class="LC_nobreak"><label><input type="radio" name="RADVAL'.$counter.'_'.$partid.'" '.
-	    'onclick="javascript:writeBox(this.form,\''.$counter.'_'.$partid.'\','.
+        'onclick="javascript:writeBox(this.form,\''.$counter.'_'.$partid.'\','.
 	    $thisweight.')" value="'.$thisweight.'" '.
 	    ($score eq $thisweight ? 'checked="checked"':'').' /> '.$thisweight."</label></span></td>\n";
 	$radio.=(($ctr+1)%10 == 0 ? '</tr><tr>' : '');
@@ -1715,13 +1768,13 @@ sub gradeBox {
 
     my $line.='<input type="text" name="GD_BOX'.$counter.'_'.$partid.'"'.
 	($score ne ''? ' value = "'.$score.'"':'').' size="4" '.
-	'onChange="javascript:updateRadio(this.form,\''.$counter.'_'.$partid.'\','.
+	'onchange="javascript:updateRadio(this.form,\''.$counter.'_'.$partid.'\','.
 	$wgt.')" /></td>'."\n";
     $line.='<td>/'.$wgt.' '.$wgtmsg.
 	($$record{'resource.'.$partid.'.solved'} eq 'correct_by_student' ? '&nbsp;'.$checkIcon : '').
-	' </td><td><b>'.&mt('Grade Status').':</b>'."\n";
-    $line.='<select name="GD_SEL'.$counter.'_'.$partid.'" '.
-	'onChange="javascript:clearRadBox(this.form,\''.$counter.'_'.$partid.'\')" >'."\n";
+	' </td>'."\n";
+    $line.='<td><select name="GD_SEL'.$counter.'_'.$partid.'" '.
+	'onchange="javascript:clearRadBox(this.form,\''.$counter.'_'.$partid.'\')" >'."\n";
     if ($$record{'resource.'.$partid.'.solved'} eq 'excused') {
 	$line.='<option></option>'.
 	    '<option value="excused" selected="selected">'.&mt('excused').'</option>';
@@ -1734,9 +1787,8 @@ sub gradeBox {
 
 	#&mt('<td><b>Part:</b></td><td>[_1]</td><td><b>Points:</b></td><td>[_2]</td><td>or</td><td>[_3]</td>',$display_part,$radio,$line);
     $result .= 
-	    '<td><b>'.&mt('Part').':</b></td><td>'.$display_part.'</td><td><b>'.&mt('Points').':</b></td><td>'.$radio.'</td><td>'.&mt('or').'</td><td>'.$line.'</td>'.
-    
-    $result.='</tr></table>'."\n";
+	    '<td>'.$display_part.'</td><td>'.$radio.'</td><td>'.&mt('or').'</td><td>'.$line.'</td>';
+    $result.=&Apache::loncommon::end_data_table_row();
     $result.='<input type="hidden" name="stores'.$counter.'_'.$partid.'" value="" />'."\n".
 	'<input type="hidden" name="oldpts'.$counter.'_'.$partid.'" value="'.$score.'" />'."\n".
 	'<input type="hidden" name="solved'.$counter.'_'.$partid.'" value="'.
@@ -1745,13 +1797,17 @@ sub gradeBox {
         $$record{'resource.'.$partid.'.tries'}.'" />'."\n".
         '<input type="hidden" name="aggtries'.$counter.'_'.$partid.'" value="'.
         $aggtries.'" />'."\n";
-    $result.=&handback_box($symb,$uname,$udom,$counter,$partid,$record);
+    my $res_error;
+    $result.=&handback_box($symb,$uname,$udom,$counter,$partid,$record,\$res_error);
+    if ($res_error) {
+        return &navmap_errormsg();
+    }
     return $result;
 }
 
 sub handback_box {
-    my ($symb,$uname,$udom,$counter,$partid,$record) = @_;
-    my ($partlist,$handgrade,$responseType) = &response_type($symb);
+    my ($symb,$uname,$udom,$counter,$partid,$record,$res_error) = @_;
+    my ($partlist,$handgrade,$responseType) = &response_type($symb,$res_error);
     my (@respids);
      my @part_response_id = &flatten_responseType($responseType);
     foreach my $part_response_id (@part_response_id) {
@@ -1813,26 +1869,23 @@ sub show_problem {
 	$companswer=~s|name="submit"|name="would_have_been_submit"|g;
     }
     $rendered=
-	'<div class="LC_grade_show_problem_header">'.
-	&mt('View of the problem').
-	'</div><div class="LC_grade_show_problem_problem">'.
-	$rendered.
-	'</div>';
+        '<div class="LC_Box">'
+       .'<h3 class="LC_hcell">'.&mt('View of the problem').'</h3>'
+       .$rendered
+       .'</div>';
     $companswer=
-	'<div class="LC_grade_show_problem_header">'.
-	&mt('Correct answer').
-	'</div><div class="LC_grade_show_problem_problem">'.
-	$companswer.
-	'</div>';
+        '<div class="LC_Box">'
+       .'<h3 class="LC_hcell">'.&mt('Correct answer').'</h3>'
+       .$companswer
+       .'</div>';
     my $result;
     if ($mode eq 'both') {
-	$result=$rendered.$companswer;
+        $result=$rendered.$companswer;
     } elsif ($mode eq 'text') {
-	$result=$rendered;
+        $result=$rendered;
     } elsif ($mode eq 'answer') {
-	$result=$companswer;
+        $result=$companswer;
     }
-    $result='<div class="LC_grade_show_problem">'.$result.'</div>';
     return $result;
 }
 
@@ -2010,7 +2063,7 @@ sub submission {
 	    $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"
+<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
@@ -2026,12 +2079,31 @@ KEYWORDS
     }
 
 # This is where output for one specific student would start
-    my $add_class = ($counter%2) ? 'LC_grade_show_user_odd_row' : '';
-    $request->print("\n\n".
-                    '<div class="LC_grade_show_user '.$add_class.'">'.
-		    '<div class="LC_grade_user_name">'.&nameUserString(undef,$env{'form.fullname'},$uname,$udom).'</div>'.
-		    '<div class="LC_grade_show_user_body">'."\n");
+    my $add_class = ($counter%2) ? ' LC_grade_show_user_odd_row' : '';
+    $request->print(
+        "\n\n"
+       .'<div class="LC_grade_show_user'.$add_class.'">'
+       .'<h2>'.&nameUserString(undef,$env{'form.fullname'},$uname,$udom).'</h2>'
+       ."\n"
+    );
+
+    # Show additional functions if allowed
+    if ($perm{'vgr'}) {
+        $request->print(
+            &Apache::loncommon::track_student_link(
+                &mt('View recent activity'),
+                $uname,$udom,'check')
+           .' '
+        );
+    }
+    if ($perm{'opa'}) {
+        $request->print(
+            &Apache::loncommon::pprmlink(
+                &mt('Set/Change parameters'),
+                $uname,$udom,$symb,'check'));
+    }
 
+    # Show Problem
     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') {
@@ -2046,24 +2118,26 @@ KEYWORDS
     }
 
     my %record = &Apache::lonnet::restore($symb,$env{'request.course.id'},$udom,$uname);
-    my ($partlist,$handgrade,$responseType) = &response_type($symb);
+    my $res_error;
+    my ($partlist,$handgrade,$responseType) = &response_type($symb,\$res_error);
+    if ($res_error) {
+        $request->print(&navmap_errormsg());
+        return;
+    }
 
     # Display student info
     $request->print(($counter == 0 ? '' : '<br />'));
-    my $result='<div class="LC_grade_submissions">';
-    
-    $result.='<div class="LC_grade_submissions_header">';
-    $result.= &mt('Submissions');
+
+    my $result='<div class="LC_Box">'
+              .'<h3 class="LC_hcell">'.&mt('Submissions').'</h3>';
     $result.='<input type="hidden" name="name'.$counter.
-	'" value="'.$env{'form.fullname'}.'" />'."\n";
+             '" value="'.$env{'form.fullname'}.'" />'."\n";
     if ($env{'form.handgrade'} eq 'no') {
-	$result.='<span class="LC_grade_check_note">'.
-	    &mt('Part(s) graded correct by the computer is marked with a [_1] symbol.',$checkIcon)."</span>\n";
-
+        $result.='<p class="LC_info">'
+                .&mt('Part(s) graded correct by the computer is marked with a [_1] symbol.',$checkIcon)
+                ."</p>\n";
     }
 
-
-
     # If any part of the problem is an essay-response (handgraded), then check for collaborators
     my $fullname;
     my $col_fullnames = [];
@@ -2074,9 +2148,9 @@ KEYWORDS
 	$result.=$sub_result;
     }
     $request->print($result."\n");
-    $request->print('</div>'."\n");
+
     # print student answer/submission
-    # Options are (1) Handgaded submission only
+    # Options are (1) Handgraded submission only
     #             (2) Last submission, includes submission that is not handgraded 
     #                  (for multi-response type part)
     #             (3) Last submission plus the parts info
@@ -2086,10 +2160,12 @@ KEYWORDS
 	
 	my $lastsubonly;
 
-	if ($$timestamp eq '') {
-	    $lastsubonly.='<div class="LC_grade_submissions_body">'.$$string[0].'</div>'; 
-	} else {
-	    $lastsubonly = '<div class="LC_grade_submissions_body"> <b>Date Submitted:</b> '.$$timestamp."\n";
+        if ($$timestamp eq '') {
+            $lastsubonly.='<div class="LC_grade_submissions_body">'.$$string[0].'</div>'; 
+        } else {
+            $lastsubonly =
+                '<div class="LC_grade_submissions_body">'
+               .'<b>'.&mt('Date Submitted:').'</b> '.$$timestamp."\n";
 
 	    my %seenparts;
 	    my @part_response_id = &flatten_responseType($responseType);
@@ -2113,16 +2189,18 @@ KEYWORDS
 		}
 		my $responsetype = $responseType->{$partid}->{$respid};
 		if (!exists($record{"resource.$partid.$respid.submission"})) {
-		    $lastsubonly.="\n".'<div class="LC_grade_submission_part"><b>Part:</b> '.
-			$display_part.' <span class="LC_internal_info">( ID '.$respid.
-			' )</span>&nbsp; &nbsp;'.
+                    $lastsubonly.="\n".'<div class="LC_grade_submission_part">'.
+                        '<b>'.&mt('Part: [_1]',$display_part).'</b>'.
+                        ' <span class="LC_internal_info">'.
+                        '('.&mt('Part ID: [_1]',$respid).')'.
+                        '</span>&nbsp; &nbsp;'.
 			'<span class="LC_warning">'.&mt('Nothing submitted - no attempts.').'</span><br /><br /></div>';
 		    next;
 		}
 		foreach my $submission (@$string) {
 		    my ($partid,$respid) = ($submission =~ /^resource\.([^\.]*)\.([^\.]*)\.submission/);
 		    if (join('_',@{$part}) ne ($partid.'_'.$respid)) { next; }
-		    my ($ressub,$subval) = split(/:/,$submission,2);
+		    my ($ressub,$hide,$subval) = split(/:/,$submission,3);
 		    # Similarity check
 		    my $similar='';
 		    if($env{'form.checkPlag'}){
@@ -2134,17 +2212,21 @@ KEYWORDS
 				&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 />';
+                            if ($hide) {
+                                $similar='<hr /><span class="LC_warning">'.&mt("Essay was found to be similar to another essay submitted for this assignment.").'<br />'.
+                                         &mt('As the current submission is for an anonymous survey, no other details are available.').'</span><hr />';
+                            } else {
+			        $similar="<hr /><h3><span class=\"LC_warning\">".
+				    &mt('Essay is [_1]% similar to an essay by [_2] in course [_3] (course id [_4]:[_5])',
+				        $osim,
+				        &Apache::loncommon::plainname($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);
@@ -2152,29 +2234,37 @@ KEYWORDS
 			($env{'form.lastSub'} eq 'hdgrade' && 
 			 $$handgrade{$$part[0].'_'.$$part[1]} eq 'yes')) {
 			my $display_part=&get_display_part($partid,$symb);
-			$lastsubonly.='<div class="LC_grade_submission_part"><b>Part:</b> '.
-			    $display_part.' <span class="LC_internal_info">( ID '.$respid.
-			    ' )</span>&nbsp; &nbsp;';
+                        $lastsubonly.='<div class="LC_grade_submission_part">'.
+                            '<b>'.&mt('Part: [_1]',$display_part).'</b>'.
+                            ' <span class="LC_internal_info">'.
+                            '('.&mt('Part ID: [_1]',$respid).')'.
+                            '</span>&nbsp; &nbsp;';
 			my $files=&get_submitted_files($udom,$uname,$partid,$respid,\%record);
 			if (@$files) {
-			    $lastsubonly.='<br /><span class="LC_warning">'.&mt('Like all files provided by users, this file may contain viruses').'</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>';
-			    }
+                            if ($hide) {
+                                $lastsubonly.='<br />'.&mt('[quant,_1,file] uploaded to this anonymous survey',scalar(@{$files}));
+                            } else {
+                                $lastsubonly.='<br /><span class="LC_warning">'.&mt('Like all files provided by users, this file may contain viruses').'</span><br />';
+                                foreach my $file (@$files) {
+                                    &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 />';
 			}
-			$lastsubonly.='<b>'.&mt('Submitted Answer:').' </b>'.
-			    &cleanRecord($subval,$responsetype,$symb,$partid,
-					 $respid,\%record,$order,undef,$uname,$udom);
+                        if ($hide) {
+                            $lastsubonly.='<b>'.&mt('Anonymous Survey').'</b>'; 
+                        } else {
+			    $lastsubonly.='<b>'.&mt('Submitted Answer:').' </b>'.
+			        &cleanRecord($subval,$responsetype,$symb,$partid,
+					     $respid,\%record,$order,undef,$uname,$udom);
+                        }
 			if ($similar) {$lastsubonly.="<br /><br />$similar\n";}
 			$lastsubonly.='</div>';
 		    }
 		}
 	    }
-	    $lastsubonly.='</div>'."\n";
+	    $lastsubonly.='</div>'."\n"; # End: LC_grade_submissions_body
 	}
 	$request->print($lastsubonly);
    } elsif ($env{'form.lastSub'} eq 'datesub') {
@@ -2192,7 +2282,7 @@ KEYWORDS
     # return if view submission with no grading option
     if ($env{'form.showgrading'} eq '' || (!&canmodify($usec))) {
 	my $toGrade.='<input type="button" value="Grade Student" '.
-	    'onClick="javascript:checksubmit(this.form,\'Grade Student\',\''
+	    'onclick="javascript:checksubmit(this.form,\'Grade Student\',\''
 	    .$counter.'\');" target="_self" /> &nbsp;'."\n" if (&canmodify($usec));
 	$toGrade.='</div>'."\n";
 	if (($env{'form.command'} eq 'submission') || 
@@ -2236,11 +2326,11 @@ KEYWORDS
     my @partlist;
     my @gradePartRespid;
     my @part_response_id = &flatten_responseType($responseType);
-    $request->print('<div class="LC_grade_assign">'.
-		    
-		    '<div class="LC_grade_assign_header">'.
-		    &mt('Assign Grades').'</div>'.
-		    '<div class="LC_grade_assign_body">');
+    $request->print(
+        '<div class="LC_Box">'
+       .'<h3 class="LC_hcell">'.&mt('Assign Grades').'</h3>'
+    );
+    $request->print(&gradeBox_start());
     foreach my $part_response_id (@part_response_id) {
     	my ($partid,$respid) = @{ $part_response_id };
 	my $part_resp = join('_',@{ $part_response_id });
@@ -2252,19 +2342,10 @@ KEYWORDS
 	push(@gradePartRespid,$partid.'.'.$respid);
 	$request->print(&gradeBox($request,$symb,$uname,$udom,$counter,$partid,\%record));
     }
-    $request->print('</div></div>');
+    $request->print(&gradeBox_end()); # </div>
+    $request->print('</div>');
 
     $request->print('<div class="LC_grade_info_links">');
-    if ($perm{'vgr'}) {
-	$request->print(
-	    &Apache::loncommon::track_student_link(&mt('View recent activity'),
-						   $uname,$udom,'check'));
-    }
-    if ($perm{'opa'}) {
-	$request->print(
-	    &Apache::loncommon::pprmlink(&mt('Set/Change parameters'),
-					 $uname,$udom,$symb,'check'));
-    }
     $request->print('</div>');
 
     $result='<input type="hidden" name="partlist'.$counter.
@@ -2281,15 +2362,14 @@ KEYWORDS
 
 # Done with printing info for one student
 
-    $request->print('</div>');#LC_grade_show_user_body
     $request->print('</div>');#LC_grade_show_user
 
 
     # print end of form
     if ($counter == $total) {
-	my $endform='<table border="0"><tr><td>'."\n";
+        my $endform='<br /><hr /><table border="0"><tr><td>'."\n";
 	$endform.='<input type="button" value="'.&mt('Save &amp; Next').'" '.
-	    'onClick="javascript:checksubmit(this.form,\'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>'.
@@ -2297,12 +2377,14 @@ KEYWORDS
 	    '<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</;
-	$endform.=&mt('[quant,_1,student]',$ntstu);
+        $endform.=&mt('[_1]student(s)',$ntstu);
 	$endform.='&nbsp;&nbsp;<input type="button" value="'.&mt('Previous').'" '.
-	    'onClick="javascript:checksubmit(this.form,\'Previous\');" target="_self" /> &nbsp;'."\n".
+	    'onclick="javascript:checksubmit(this.form,\'Previous\');" target="_self" /> &nbsp;'."\n".
 	    '<input type="button" value="'.&mt('Next').'" '.
-	    'onClick="javascript:checksubmit(this.form,\'Next\');" target="_self" /> &nbsp;';
-	$endform.=&mt('(Next and Previous (student) do not save the scores.)')."\n" ;
+	    'onclick="javascript:checksubmit(this.form,\'Next\');" target="_self" /> &nbsp;';
+        $endform.='<span class="LC_warning">'.
+                  &mt('(Next and Previous (student) do not save the scores.)').
+                  '</span>'."\n" ;
         $endform.="<input type='hidden' value='".&get_increment().
             "' name='increment' />";
 	$endform.='</td></tr></table></form>';
@@ -2371,7 +2453,7 @@ sub check_collaborators {
 #--- Retrieve the last submission for all the parts
 sub get_last_submission {
     my ($returnhash)=@_;
-    my (@string,$timestamp);
+    my (@string,$timestamp,%lasthidden);
     if ($$returnhash{'version'}) {
 	my %lasthash=();
 	my ($version);
@@ -2383,13 +2465,39 @@ sub get_last_submission {
 		    &Apache::lonlocal::locallocaltime($$returnhash{$version.':timestamp'});
 	    }
 	}
+        my %typeparts;
+        my $showsurv = 
+            &Apache::lonnet::allowed('vas',$env{'request.course.id'});
+        foreach my $key (sort(keys(%lasthash))) {
+            if ($key =~ /\.type$/) {
+                if (($lasthash{$key} eq 'anonsurvey') || 
+                    ($lasthash{$key} eq 'anonsurveycred')) {
+                    my ($ign,@parts) = split(/\./,$key);
+                    pop(@parts);
+                    unless ($showsurv) {
+                        my $id = join(',',@parts);
+                        $typeparts{$ign.'.'.$id} = $lasthash{$key};
+                    }
+                    delete($lasthash{$key});
+                }
+            }
+        }
+        my @hidden = keys(%typeparts);
 	foreach my $key (keys(%lasthash)) {
 	    next if ($key !~ /\.submission$/);
-
+            my $hide;
+            if (@hidden) {
+                foreach my $id (@hidden) {
+                    if ($key =~ /^\Q$id\E/) {
+                        $hide = 1;
+                        last;
+                    }
+                }
+            }
 	    my ($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}));
+	    push(@string, join(':', $key, $hide, $draft.$lasthash{$key}));
 	}
     }
     if (!@string) {
@@ -2463,7 +2571,7 @@ sub processHandGrade {
                                                      undef,$feedurl,undef,
                                                      undef,undef,$showsymb,
                                                      $restitle);
-		$request->print('<br />'.&mt('Sending message to [_1]:[_2]',$uname,$udom).': '.
+		$request->print('<br />'.&mt('Sending message to [_1]',$uname.':'.$udom).': '.
 				$msgstatus);
 	    }
 	    if ($env{'form.collaborator'.$ctr}) {
@@ -2594,7 +2702,12 @@ sub processHandGrade {
     }
     $ctr = 0;
     @parsedlist = reverse @parsedlist if ($button eq 'Previous');
-    my ($partlist) = &response_type($symb);
+    my $res_error;
+    my ($partlist) = &response_type($symb,\$res_error);
+    if ($res_error) {
+        $request->print(&navmap_errormsg());
+        return;
+    }
     foreach my $student (@parsedlist) {
 	my $submitonly=$env{'form.submitonly'};
 	my ($uname,$udom) = split(/:/,$student);
@@ -2792,8 +2905,12 @@ sub check_and_remove_from_queue {
 sub handback_files {
     my ($request,$symb,$stuname,$domain,$newflg,$new_part,$newrecord) = @_;
     my $portfolio_root = '/userfiles/portfolio';
-    my ($partlist,$handgrade,$responseType) = &response_type($symb);
-
+    my $res_error;
+    my ($partlist,$handgrade,$responseType) = &response_type($symb,\$res_error);
+    if ($res_error) {
+        $request->print('<br />'.&navmap_errormsg().'<br />');
+        return;
+    }
     my @part_response_id = &flatten_responseType($responseType);
     foreach my $part_response_id (@part_response_id) {
     	my ($part_id,$resp_id) = @{ $part_response_id };
@@ -3041,8 +3158,7 @@ sub viewgrades_js {
     my ($request) = shift;
 
     my $alertmsg = &mt('A number equal or greater than 0 is expected. Entered value = ');
-    $request->print(<<VIEWJAVASCRIPT);
-<script type="text/javascript" language="javascript">
+    $request->print(&Apache::lonhtmlcommon::scripttag(<<VIEWJAVASCRIPT));
    function writePoint(partid,weight,point) {
 	var radioButton = document.classgrade["RADVAL_"+partid];
 	var textbox = document.classgrade["TEXTVAL_"+partid];
@@ -3203,7 +3319,6 @@ sub viewgrades_js {
 	}
     }
 
-</script>
 VIEWJAVASCRIPT
 }
 
@@ -3251,7 +3366,11 @@ sub viewgrades {
     $result.= '<h3>'.$common_header.'</h3>'.&Apache::loncommon::start_data_table();
     #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 $res_error;
+    my ($partlist,$handgrade,$responseType) = &response_type($symb,\$res_error);
+    if ($res_error) {
+        return &navmap_errormsg();
+    }
     my %weight = ();
     my $ctsparts = 0;
     my %seen = ();
@@ -3277,11 +3396,11 @@ sub viewgrades {
 	}
 	$radio.='</tr></table>';
 	my $line = '<input type="text" name="TEXTVAL_'.
-	    $partid.'" size="4" '.'onChange="javascript:writePoint(\''.
+	    $partid.'" size="4" '.'onchange="javascript:writePoint(\''.
 		$partid.'\','.$weight{$partid}.',\'textval\')" /> /'.
 	    $weight{$partid}.' '.&mt('(problem weight)').'</td>'."\n";
 	$line.= '<td><b>'.&mt('Grade Status').':</b><select name="SELVAL_'.$partid.'"'.
-	    'onChange="javascript:writeRadText(\''.$partid.'\','.
+	    'onchange="javascript:writeRadText(\''.$partid.'\','.
 		$weight{$partid}.')"> '.
 	    '<option selected="selected"> </option>'.
 	    '<option value="excused">'.&mt('excused').'</option>'.
@@ -3295,14 +3414,14 @@ sub viewgrades {
 
 	$result.=
 	    &Apache::loncommon::start_data_table_row()."\n".
-	    '<td><b>'.&mt('Part').':</b></td><td>'.$display_part.'</td><td><b>'.&mt('Points').':</b></td><td>'.$radio.'</td><td>'.&mt('or').'</td><td>'.$line.'</td>'.
+	    '<td><b>'.&mt('Part:').'</b></td><td>'.$display_part.'</td><td><b>'.&mt('Points:').'</b></td><td>'.$radio.'</td><td>'.&mt('or').'</td><td>'.$line.'</td>'.
 	    &Apache::loncommon::end_data_table_row()."\n";
 	$ctsparts++;
     }
     $result.=&Apache::loncommon::end_data_table()."\n".
 	'<input type="hidden" name="totalparts" value="'.$ctsparts.'" />';
     $result.='<input type="button" value="'.&mt('Revert to Default').'" '.
-	'onClick="javascript:resetEntry('.$ctsparts.');" />';
+	'onclick="javascript:resetEntry('.$ctsparts.');" />';
 
     #table listing all the students in a section/class
     #header of table
@@ -3311,7 +3430,11 @@ sub viewgrades {
 	      &Apache::loncommon::start_data_table_header_row().
 	      '<th>'.&mt('No.').'</th>'.
 	      '<th>'.&nameUserString('header')."</th>\n";
-    my (@parts) = sort(&getpartlist($symb));
+    my $partserror;
+    my (@parts) = sort(&getpartlist($symb,\$partserror));
+    if ($partserror) {
+        return &navmap_errormsg();
+    }
     my (undef,undef,$url)=&Apache::lonnet::decode_symb($symb);
     my @partids = ();
     foreach my $part (@parts) {
@@ -3362,7 +3485,7 @@ sub viewgrades {
     $result.=&Apache::loncommon::end_data_table();
     $result.='<input type="hidden" name="total" value="'.$ctr.'" />'."\n";
     $result.='<input type="button" value="'.&mt('Save').'" '.
-	'onClick="javascript:submit();" target="_self" /></form>'."\n";
+	'onclick="javascript:submit();" target="_self" /></form>'."\n";
     if (scalar(%$fullname) eq 0) {
 	my $colspan=3+scalar(@parts);
 	my $section_display = join (", ",&Apache::loncommon::get_env_multiple('form.section'));
@@ -3414,7 +3537,7 @@ sub viewstudentgrade {
 		'GD_'.$student.'_'.$part.'_awarded_s" value="'.$pts.'" />'."\n";
 	    $result.='<input type="text" name="'.
 		'GD_'.$student.'_'.$part.'_awarded" '.
-		'onChange="javascript:changeSelect(\''.$part.'\',\''.$student.
+                'onchange="javascript:changeSelect(\''.$part.'\',\''.$student.
 		'\')" value="'.$pts.'" size="4" /></td>'."\n";
 	} elsif ($type eq 'solved') {
 	    my ($status,$foo)=split(/_/,$score,2);
@@ -3423,7 +3546,7 @@ sub viewstudentgrade {
 		$part.'_solved_s" value="'.$status.'" />'."\n";
 	    $result.='&nbsp;<select name="'.
 		'GD_'.$student.'_'.$part.'_solved" '.
-		'onChange="javascript:changeOneScore(\''.$part.'\',\''.$student.'\')" >'."\n";
+                'onchange="javascript:changeOneScore(\''.$part.'\',\''.$student.'\')" >'."\n";
 	    $result.= (($status eq 'excused') ? '<option> </option><option selected="selected" value="excused">'.&mt('excused').'</option>' 
 		: '<option selected="selected"> </option><option value="excused">'.&mt('excused').'</option>')."\n";
 	    $result.='<option value="reset status">'.&mt('reset status').'</option>';
@@ -3461,6 +3584,7 @@ sub editgrades {
 		    'incorrect'=>'incorrect_by_override',
 		    'excused'  =>'excused',
 		    'ungraded' =>'ungraded_attempted',
+                    'credited' =>'credit_attempted',
 		    'nothing'  => '',
 		    );
     my ($classlist,undef,$fullname) = &getclasslist($env{'form.section'},'0');
@@ -3470,7 +3594,11 @@ sub editgrades {
     my %columns = ();
     my ($i,$ctr,$count,$rec_update) = (0,0,0,0);
 
-    my (@parts) = sort(&getpartlist($symb));
+    my $partserror;
+    my (@parts) = sort(&getpartlist($symb,\$partserror));
+    if ($partserror) {
+        return &navmap_errormsg();
+    }
     my $header;
     while ($ctr < $env{'form.totalparts'}) {
 	my $partid = $env{'form.partid_'.$ctr};
@@ -3681,7 +3809,7 @@ sub split_part_type {
 #
 #--- Javascript to handle csv upload
 sub csvupload_javascript_reverse_associate {
-    my $error1=&mt('You need to specify the username or ID');
+    my $error1=&mt('You need to specify the username or the student/employee ID');
     my $error2=&mt('You need to specify at least one grading field');
   return(<<ENDPICK);
   function verify(vf) {
@@ -3721,7 +3849,7 @@ ENDPICK
 }
 
 sub csvupload_javascript_forward_associate {
-    my $error1=&mt('You need to specify the username or ID');
+    my $error1=&mt('You need to specify the username or the student/employee ID');
     my $error2=&mt('You need to specify at least one grading field');
   return(<<ENDPICK);
   function verify(vf) {
@@ -3779,7 +3907,7 @@ $result
 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);" />
+<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" />
@@ -3793,17 +3921,21 @@ to this page if the data selected is ins
 <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
+    $request->print(&Apache::lonhtmlcommon::scripttag($javascript));
     return '';
 
 }
 
 sub csvupload_fields {
-    my ($symb) = @_;
-    my (@parts) = &getpartlist($symb);
+    my ($symb,$errorref) = @_;
+    my (@parts) = &getpartlist($symb,$errorref);
+    if (ref($errorref)) {
+        if ($$errorref) {
+            return;
+        }
+    }
+
     my @fields=(['ID','Student/Employee ID'],
 		['username','Student Username'],
 		['domain','Student Domain']);
@@ -3828,15 +3960,14 @@ sub csvuploadmap_footer {
 </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 />
+<input type="button" onclick="javascript:verify(this.form)" value="Assign Grades" /><br />
 </form>
 ENDPICK
 }
 
 sub checkforfile_js {
     my $alertmsg = &mt('Please use the browse button to select a file from your local directory.');
-    my $result =<<CSVFORMJS;
-<script type="text/javascript" language="javascript">
+    my $result = &Apache::lonhtmlcommon::scripttag(<<CSVFORMJS);
     function checkUpload(formname) {
 	if (formname.upfile.value == "") {
 	    alert("$alertmsg");
@@ -3844,7 +3975,6 @@ sub checkforfile_js {
 	}
 	formname.submit();
     }
-    </script>
 CSVFORMJS
     return $result;
 }
@@ -3873,7 +4003,7 @@ sub upcsvScores_form {
 <input type="hidden" name="probTitle" value="$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" />
+<br /><input type="button" onclick="javascript:checkUpload(this.form);" value="$upload" />
 <label><input type="checkbox" name="noFirstLine" />$ignore</label>
 </form>
 ENDUPFORM
@@ -3903,8 +4033,12 @@ sub csvuploadmap {
     &csvuploadmap_header($request,$symb,$datatoken,$#records+1);
     my ($i,$keyfields);
     if (@records) {
-	my @fields=&csvupload_fields($symb);
-
+        my $fieldserror;
+	my @fields=&csvupload_fields($symb,\$fieldserror);
+        if ($fieldserror) {
+            $request->print(&navmap_errormsg());
+            return;
+        }
 	if ($env{'form.upfile_associate'} eq 'reverse') {	
 	    &Apache::loncommon::csv_print_samples($request,\@records);
 	    $i=&Apache::loncommon::csv_print_select_table($request,\@records,
@@ -4090,14 +4224,14 @@ sub csvuploadassign {
 	   $countdone++;
         }
     }
-    $request->print('<br /><span class="LC_info">'.&mt("Saved [_1] students",$countdone)."</span>\n");
+    $request->print('<br />'.&Apache::lonhtmlcommon::confirm_success(&mt("Saved scores for [quant,_1,student]",$countdone),$countdone==0));
     if (@skipped) {
-	$request->print('<p><span class="LC_warning">'.&mt('Skipped Students').'</span></p>');
-	foreach my $student (@skipped) { $request->print("$student<br />\n"); }
+	$request->print('<br />'.&Apache::lonhtmlcommon::confirm_success(&mt('No scores stored for the following username(s):'),1).'<br />');
+        $request->print(join(', ',@skipped));
     }
     if (@notallowed) {
-	$request->print('<p><span class="LC_error">'.&mt('Students Not Allowed to Modify').'</span></p>');
-	foreach my $student (@notallowed) { $request->print("$student<br />\n"); }
+	$request->print('<br />'.&Apache::lonhtmlcommon::confirm_success(&mt('Modification of scores not allowed for the following username(s):'),1).'<br />');
+	$request->print(join(', ',@notallowed));
     }
     $request->print("<br />\n");
     $request->print(&show_grading_menu_form($symb));
@@ -4114,8 +4248,7 @@ sub pickStudentPage {
     my ($request) = shift;
 
     my $alertmsg = &mt('Please select the student you wish to grade.');
-    $request->print(<<LISTJAVASCRIPT);
-<script type="text/javascript" language="javascript">
+    $request->print(&Apache::lonhtmlcommon::scripttag(<<LISTJAVASCRIPT));
 
 function checkPickOne(formname) {
     if (radioSelection(formname.student) == null) {
@@ -4128,7 +4261,6 @@ function checkPickOne(formname) {
     formname.submit();
 }
 
-</script>
 LISTJAVASCRIPT
     &commonJSfunctions($request);
     my ($symb) = &get_symb($request);
@@ -4140,7 +4272,12 @@ LISTJAVASCRIPT
 	&mt('Manual Grading by Page or Sequence').'</span></h3>';
 
     $result.='<form action="/adm/grades" method="post" name="displayPage">'."\n";
-    my ($titles,$symbx) = &getSymbMap();
+    my $map_error;
+    my ($titles,$symbx) = &getSymbMap($map_error);
+    if ($map_error) {
+        $request->print(&navmap_errormsg());
+        return; 
+    }
     my ($curpage) =&Apache::lonnet::decode_symb($symb); 
 #    my ($curpage,$mapId) =&Apache::lonnet::decode_symb($symb); 
 #    my $type=($curpage =~ /\.(page|sequence)/);
@@ -4187,7 +4324,7 @@ LISTJAVASCRIPT
     $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="'.&mt('Next').' &rarr;" /><br />'."\n";
+             'onclick="javascript:checkPickOne(this.form);" value="'.&mt('Next').' &rarr;" /><br />'."\n";
 
     $request->print($result);
 
@@ -4226,7 +4363,7 @@ LISTJAVASCRIPT
     }
     $studentTable.=&Apache::loncommon::end_data_table()."\n";
     $studentTable.='<input type="button" '.
-	'onClick="javascript:checkPickOne(this.form);" value="'.&mt('Next').' &rarr;" /></form>'."\n";
+                   'onclick="javascript:checkPickOne(this.form);" value="'.&mt('Next').' &rarr;" /></form>'."\n";
 
     $studentTable.=&show_grading_menu_form($symb);
     $request->print($studentTable);
@@ -4235,8 +4372,14 @@ LISTJAVASCRIPT
 }
 
 sub getSymbMap {
+    my ($map_error) = @_;
     my $navmap = Apache::lonnavmaps::navmap->new();
-
+    unless (ref($navmap)) {
+        if (ref($map_error)) {
+            $$map_error = 'navmap';
+        }
+        return;
+    }
     my %symbx = ();
     my @titles = ();
     my $minder = 0;
@@ -4295,6 +4438,11 @@ sub displayPage {
     $request->print($result);
 
     my $navmap = Apache::lonnavmaps::navmap->new();
+    unless (ref($navmap)) {
+        $request->print(&navmap_errormsg());
+        $request->print(&show_grading_menu_form($symb));
+        return;
+    }
     my ($mapUrl, $id, $resUrl)=&Apache::lonnet::decode_symb($env{'form.page'});
     my $map = $navmap->getResourceByUrl($resUrl); # add to navmaps
     if (!$map) {
@@ -4322,7 +4470,9 @@ sub displayPage {
     my $checkIcon = '<img alt="'.&mt('Check Mark').
 	'" src="'.&Apache::loncommon::lonhttpdurl($request->dir_config('lonIconsURL').'/check.gif').'" height="16" border="0" />';
 
-    $studentTable.='&nbsp;'.&mt('<b>Note:</b> Problems graded correct by the computer are marked with a [_1] symbol.',$checkIcon)."\n".
+    $studentTable.='&nbsp;<span class="LC_info">'.
+        &mt('Problems graded correct by the computer are marked with a [_1] symbol.',$checkIcon).
+        '</span>'."\n".
 	&Apache::loncommon::start_data_table().
 	&Apache::loncommon::start_data_table_header_row().
 	'<th align="center">&nbsp;Prob.&nbsp;</th>'.
@@ -4393,11 +4543,13 @@ sub displayPage {
  
 	    }
 	    if (&canmodify($usec)) {
+            $studentTable.=&gradeBox_start();
 		foreach my $partid (@{$parts}) {
 		    $studentTable.=&gradeBox($request,$symbx,$uname,$udom,$question,$partid,\%record);
 		    $studentTable.='<input type="hidden" name="q_'.$question.'" value="'.$partid.'" />'."\n";
 		    $question++;
 		}
+            $studentTable.=&gradeBox_end();
 		$prob++;
 	    }
 	    $studentTable.='</td></tr>';
@@ -4406,10 +4558,11 @@ sub displayPage {
         $curRes = $iterator->next();
     }
 
-    $studentTable.='</table>'."\n".
-	'<input type="button" value="'.&mt('Save').'" '.
-	'onClick="javascript:checkSubmitPage(this.form,'.$question.');" />'.
-	'</form>'."\n";
+    $studentTable.=
+        '</table>'."\n".
+        '<input type="button" value="'.&mt('Save').'" '.
+        'onclick="javascript:checkSubmitPage(this.form,'.$question.');" />'.
+        '</form>'."\n";
     $studentTable.=&show_grading_menu_form($symb);
     $request->print($studentTable);
 
@@ -4455,37 +4608,49 @@ sub displaySubByDates {
 	my @versionKeys = split(/\:/,$$record{$version.':keys'});
 	my @displaySub = ();
 	foreach my $partid (@{$parts}) {
+            my $hidden;
+            if (($$record{$version.':resource.'.$partid.'.type'} eq 'anonsurvey') ||
+                ($$record{$version.':resource.'.$partid.'.type'} eq 'anonsurveycred')) {
+                $hidden = 1;
+            }
 	    my @matchKey = ($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}) &&
 		    $$record{$version.':'.$matchKey} ne '') {
-
+                    
 		    my ($responseId)= ($isTask ? ($matchKey=~ /^resource\.(.*?)\.\Q$partid\E\.award$/)
 				               : ($matchKey=~ /^resource\.\Q$partid\E\.(.*?)\.submission$/));
-		    $displaySub[0].='<b>'.&mt('Part:').'</b>&nbsp;'.$display_part.'&nbsp;';
-		    $displaySub[0].='<span class="LC_internal_info">('.&mt('ID').'&nbsp;'.
-			$responseId.')</span>&nbsp;<b>';
-		    if ($$record{"$where.$partid.tries"} eq '') {
-			$displaySub[0].=&mt('Trial&nbsp;not&nbsp;counted');
-		    } else {
-			$displaySub[0].=&mt('Trial&nbsp;[_1]',
+                    $displaySub[0].='<span class="LC_nobreak"';
+                    $displaySub[0].='<b>'.&mt('Part: [_1]',$display_part).'</b>'
+                                   .' <span class="LC_internal_info">'
+                                   .'('.&mt('Part ID: [_1]',$responseId).')'
+                                   .'</span>'
+                                   .' <b>';
+                    if ($hidden) {
+                        $displaySub[0].= &mt('Anonymous Survey').'</b>';
+                    } else {
+		        if ($$record{"$where.$partid.tries"} eq '') {
+			    $displaySub[0].=&mt('Trial not counted');
+		        } else {
+			    $displaySub[0].=&mt('Trial: [_1]',
 					    $$record{"$where.$partid.tries"});
-		    }
-		    my $responseType=($isTask ? 'Task'
+		        }
+		        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,
-                                       $no_increment);
-		    }
-		    $displaySub[0].='</b>&nbsp; '.
-			&cleanRecord($$record{$version.':'.$matchKey},$responseType,$symb,$partid,$responseId,$record,$orders{$partid}->{$responseId},"$version:",$uname,$udom).'<br />';
+		        if (!exists($orders{$partid})) { $orders{$partid}={}; }
+		        if (!exists($orders{$partid}->{$responseId})) {
+			    $orders{$partid}->{$responseId}=
+			        &get_order($partid,$responseId,$symb,$uname,$udom,
+                                           $no_increment);
+		        }
+		        $displaySub[0].='</b></span>'; # /nobreak
+		        $displaySub[0].='&nbsp; '.
+			    &cleanRecord($$record{$version.':'.$matchKey},$responseType,$symb,$partid,$responseId,$record,$orders{$partid}->{$responseId},"$version:",$uname,$udom).'<br />';
+                    }
 		}
 	    }
 	    if (exists($$record{"$where.$partid.checkedin"})) {
@@ -4545,7 +4710,12 @@ sub updateGradeByPage {
 
     $request->print($result);
 
+
     my $navmap = Apache::lonnavmaps::navmap->new();
+    unless (ref($navmap)) {
+        $request->print(&navmap_errormsg());
+        return;
+    }
     my ($mapUrl, $id, $resUrl) = &Apache::lonnet::decode_symb( $env{'form.page'});
     my $map = $navmap->getResourceByUrl($resUrl); # add to navmaps
     if (!$map) {
@@ -4690,7 +4860,7 @@ sub updateGradeByPage {
 #
 #-------------------------------------------------------------------
 
-#--------------------Scantron Grading-----------------------------------
+#-------------------- Bubblesheet (Scantron) Grading -------------------
 #
 #------ start of section for handling grading by page/sequence ---------
 
@@ -4768,14 +4938,19 @@ sub defaultFormData {
    Return html dropdown of possible sequences to grade
  
  Arguments:
-   $symb - $symb of the current resource 
+   $symb - $symb of the current resource
+   $map_error - ref to scalar which will container error if
+                $navmap object is unavailable in &getSymbMap().
 
 =cut
 
 sub getSequenceDropDown {
-    my ($symb)=@_;
+    my ($symb,$map_error)=@_;
     my $result='<select name="selectpage">'."\n";
-    my ($titles,$symbx) = &getSymbMap();
+    my ($titles,$symbx) = &getSymbMap($map_error);
+    if (ref($map_error)) {
+        return if ($$map_error);
+    }
     my ($curpage)=&Apache::lonnet::decode_symb($symb); 
     my $ctr=0;
     foreach (@$titles) {
@@ -5041,7 +5216,12 @@ sub scantron_selectphase {
     my ($r,$file2grade) = @_;
     my ($symb)=&get_symb($r);
     if (!$symb) {return '';}
-    my $sequence_selector=&getSequenceDropDown($symb);
+    my $map_error;
+    my $sequence_selector=&getSequenceDropDown($symb,\$map_error);
+    if ($map_error) {
+        $r->print('<br />'.&navmap_errormsg().'<br />');
+        return;
+    }
     my $default_form_data=&defaultFormData($symb);
     my $grading_menu_button=&show_grading_menu_form($symb);
     my $file_selector=&scantron_uploads($file2grade);
@@ -5069,10 +5249,10 @@ sub scantron_selectphase {
             <td> '.&mt('Sequence to grade:').' </td><td> '.$sequence_selector.' </td>
        '.&Apache::loncommon::end_data_table_row().'
        '.&Apache::loncommon::start_data_table_row().'
-            <td> '.&mt('Filename of scoring office file:').' </td><td> '.$file_selector.' </td>
+            <td> '.&mt('Filename of bubblesheet data file:').' </td><td> '.$file_selector.' </td>
        '.&Apache::loncommon::end_data_table_row().'
        '.&Apache::loncommon::start_data_table_row().'
-            <td> '.&mt('Format of data file:').' </td><td> '.$format_selector.' </td>
+            <td> '.&mt('Format of bubblesheet data file:').' </td><td> '.$format_selector.' </td>
        '.&Apache::loncommon::end_data_table_row().'
        '.&Apache::loncommon::start_data_table_row().'
             <td> '.&mt('Saved CODEs to validate against:').' </td><td> '.$CODE_selector.' </td>
@@ -5090,7 +5270,7 @@ sub scantron_selectphase {
        '.&Apache::loncommon::end_data_table_row().'
        '.&Apache::loncommon::start_data_table_row().'
             <td colspan="2">
-              <input type="submit" value="'.&mt('Grading: Validate Scantron Records').'" />
+              <input type="submit" value="'.&mt('Grading: Validate Bubblesheet Records').'" />
             </td>
        '.&Apache::loncommon::end_data_table_row().'
     '.&Apache::loncommon::end_data_table().'
@@ -5109,7 +5289,7 @@ sub scantron_selectphase {
     '.&Apache::loncommon::start_data_table('LC_scantron_action').'
        '.&Apache::loncommon::start_data_table_header_row().'
             <th>
-              &nbsp;'.&mt('Specify a Scantron data file to upload.').'
+              &nbsp;'.&mt('Specify a bubblesheet data file to upload.').'
             </th>
        '.&Apache::loncommon::end_data_table_header_row().'
        '.&Apache::loncommon::start_data_table_row().'
@@ -5118,17 +5298,15 @@ sub scantron_selectphase {
     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('
-              <script type="text/javascript" language="javascript">
+    $r->print(&Apache::lonhtmlcommon::scripttag('
     function checkUpload(formname) {
 	if (formname.upfile.value == "") {
 	    alert("'.&mt('Please use the browse button to select a file from your local directory.').'");
 	    return false;
 	}
 	formname.submit();
-    }
-              </script>
-
+    }'));
+    $r->print('
               <form enctype="multipart/form-data" action="/adm/grades" name="rules" method="post">
                 '.$default_form_data.'
                 <input name="courseid" type="hidden" value="'.$cnum.'" />
@@ -5136,7 +5314,7 @@ sub scantron_selectphase {
                 <input name="command" value="scantronupload_save" type="hidden" />
                 '.&mt('File to upload: [_1]','<input type="file" name="upfile" size="50" />').'
                 <br />
-                <input type="button" onClick="javascript:checkUpload(this.form);" value="'.&mt('Upload Scantron Data').'" />
+                <input type="button" onclick="javascript:checkUpload(this.form);" value="'.&mt('Upload Bubblesheet Data').'" />
               </form>
 ');
 
@@ -5178,7 +5356,7 @@ sub scantron_selectphase {
              &Apache::loncommon::start_data_table('LC_scantron_action')."\n".
              &Apache::loncommon::start_data_table_header_row()."\n".
              '<th colspan="2">
-              &nbsp;'.&mt('Review scantron data and submissions for a previously graded folder/sequence')."\n".
+              &nbsp;'.&mt('Review bubblesheet data and submissions for a previously graded folder/sequence')."\n".
              '</th>'."\n".
               &Apache::loncommon::end_data_table_header_row()."\n".
               &Apache::loncommon::start_data_table_row()."\n".
@@ -5200,7 +5378,7 @@ sub scantron_selectphase {
               &Apache::loncommon::start_data_table_row()."\n".
               '<td colspan="2">'."\n".
               '<input type="hidden" name="command" value="checksubmissions" />'."\n".
-              '<input type="submit" value="'.&mt('Review Scantron Data and Submission Records').'" />'."\n".
+              '<input type="submit" value="'.&mt('Review Bubblesheet Data and Submission Records').'" />'."\n".
               '</td>'."\n".
               &Apache::loncommon::end_data_table_row()."\n".
               &Apache::loncommon::end_data_table()."\n".
@@ -5241,7 +5419,7 @@ sub scantron_selectphase {
       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/employee ID number starts
+      IDstart     - column where the student/employee ID starts
       IDlength    - length of the student/employee ID info
       Qstart      - column where the information from the bubbled
                     'questions' start
@@ -5341,7 +5519,7 @@ sub username_to_idmap {
     $whichline         - line number of the passed in scanline
     $field             - type of change to process 
                          (either 
-                          'ID'     -> correct the student/employee ID number
+                          'ID'     -> correct the student/employee ID
                           'CODE'   -> correct the CODE
                           'answer' -> fixup the submitted answers)
     
@@ -6215,7 +6393,12 @@ sub scantron_validate_file {
     $r->print('<p>'.&mt('Gathering necessary information.').'</p>');$r->rflush();
     #get the student pick code ready
     $r->print(&Apache::loncommon::studentbrowser_javascript());
-    my $max_bubble=&scantron_get_maxbubble();
+    my $nav_error;
+    my $max_bubble=&scantron_get_maxbubble(\$nav_error);
+    if ($nav_error) {
+        $r->print(&navmap_errormsg());
+        return '';
+    }
     my $result=&scantron_form_start($max_bubble).$default_form_data;
     $r->print($result);
     
@@ -6251,7 +6434,7 @@ sub scantron_validate_file {
                   '<input type="radio" name="verifyrecord" value="0" checked="checked" />'.&mt('No').
                   '</label></span><br />'.
                   &mt('Grading will take longer if you use verification.').'<br />'.
-                  &mt("Alternatively, the 'Review scantron data' utility (see grading menu) can be used for all students after grading is complete.").'<br /><br />'.
+                  &mt("Alternatively, the 'Review bubblesheet data' utility (see grading menu) can be used for all students after grading is complete.").'<br /><br />'.
                   '<input type="submit" name="submit" value="'.&mt('Start Grading').'" />'.
                   '<input type="hidden" name="command" value="scantron_process" />'."\n");
     } else {
@@ -6627,6 +6810,10 @@ sub scantron_validate_sequence {
     my ($r,$currentphase) = @_;
 
     my $navmap=Apache::lonnavmaps::navmap->new();
+    unless (ref($navmap)) {
+        $r->print(&navmap_errormsg());
+        return (1,$currentphase);
+    }
     my (undef,undef,$sequence)=
 	&Apache::lonnet::decode_symb($env{'form.selectpage'});
 
@@ -6658,8 +6845,13 @@ sub scantron_validate_ID {
     #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 $nav_error;
+    &scantron_get_maxbubble(\$nav_error); # parse needs the bubble_lines.. array.
+    if ($nav_error) {
+        $r->print(&navmap_errormsg());
+        return(1,$currentphase);
+    }
 
     my %found=('ids'=>{},'usernames'=>{});
     for (my $i=0;$i<=$scanlines->{'count'};$i++) {
@@ -6777,10 +6969,10 @@ sub scantron_get_correction {
 	    if ($closest > 0) {
 		foreach my $testcode (@{$closest}) {
 		    my $checked='';
-		    if (!$i) { $checked=' checked="checked" '; }
+		    if (!$i) { $checked=' checked="checked"'; }
 		    $r->print("
    <label>
-       <input type='radio' name='scantron_CODE_resolution' value='use_closest_$i' $checked />
+       <input type='radio' name='scantron_CODE_resolution' value='use_closest_$i'$checked />
        ".&mt("Use the similar CODE [_1] instead.",
 	    "<b><tt>".$testcode."</tt></b>")."
     </label>
@@ -6791,18 +6983,17 @@ sub scantron_get_correction {
 	    }
 	}
 	if ($$scan_record{'scantron.CODE'}=~/\S/ ) {
-	    my $checked; if (!$i) { $checked=' checked="checked" '; }
+	    my $checked; if (!$i) { $checked=' checked="checked"'; }
 	    $r->print("
     <label>
-        <input type='radio' name='scantron_CODE_resolution' value='use_unfound' $checked />
+        <input type='radio' name='scantron_CODE_resolution' value='use_unfound'$checked />
        ".&mt("Use the CODE [_1] that is was on the paper, ignoring the error.",
 	     "<b><tt>".$$scan_record{'scantron.CODE'}."</tt></b>")."
     </label>");
 	    $r->print("\n<br />");
 	}
 
-	$r->print(<<ENDSCRIPT);
-<script type="text/javascript">
+	$r->print(&Apache::lonhtmlcommon::scripttag(<<ENDSCRIPT));
 function change_radio(field) {
     var slct=document.scantronupload.scantron_CODE_resolution;
     var i;
@@ -6810,7 +7001,6 @@ function change_radio(field) {
         if (slct[i].value==field) { slct[i].checked=true; }
     }
 }
-</script>
 ENDSCRIPT
 	my $href="/adm/pickcode?".
 	   "form=".&escape("scantronupload").
@@ -6882,8 +7072,7 @@ sub verify_bubbles_checked {
     my (@ansnums) = @_;
     my $ansnumstr = join('","',@ansnums);
     my $warning = &mt("A bubble or 'No bubble' selection has not been made for one or more lines.");
-    my $output = (<<ENDSCRIPT);
-<script type="text/javascript">
+    my $output = &Apache::lonhtmlcommon::scripttag((<<ENDSCRIPT));
 function verify_bubble_radio(form) {
     var ansnumArray = new Array ("$ansnumstr");
     var need_bubble_count = 0;
@@ -6906,7 +7095,6 @@ function verify_bubble_radio(form) {
     }
     form.submit(); 
 }
-</script>
 ENDSCRIPT
     return $output;
 }
@@ -7018,7 +7206,7 @@ sub prompt_for_corrections {
             ($responsetype_per_response{$question-1} eq 'imageresponse') ||
             ($responsetype_per_response{$question-1} eq 'reactionresponse') ||
             ($responsetype_per_response{$question-1} eq 'organicresponse')) {
-            $r->print(&mt("Although this particular question type requires handgrading, the instructions for this question in the exam directed students to leave [quant,_1,line] blank on their scantron sheets.",$lines).'<br /><br />'.&mt('A non-zero score can be assigned to the student during scantron grading by selecting a bubble in at least one line.').'<br />'.&mt('The score for this question will be a sum of the numeric values for the selected bubbles from each line, where A=1 point, B=2 points etc.').'<br />'.&mt("To assign a score of zero for this question, mark all lines as 'No bubble'.").'<br /><br />');
+            $r->print(&mt("Although this particular question type requires handgrading, the instructions for this question in the exam directed students to leave [quant,_1,line] blank on their bubblesheets.",$lines).'<br /><br />'.&mt('A non-zero score can be assigned to the student during bubblesheet grading by selecting a bubble in at least one line.').'<br />'.&mt('The score for this question will be a sum of the numeric values for the selected bubbles from each line, where A=1 point, B=2 points etc.').'<br />'.&mt("To assign a score of zero for this question, mark all lines as 'No bubble'.").'<br /><br />');
         } else {
             $r->print(&mt("Select at most one bubble in a single line and select 'No Bubble' in all the other lines. ")."<br />");
         }
@@ -7212,7 +7400,12 @@ sub scantron_validate_CODE {
 
     my %allcodes=&get_codes();
 
-    &scantron_get_maxbubble();	# parse needs the lines per response array.
+    my $nav_error;
+    &scantron_get_maxbubble(\$nav_error); # parse needs the lines per response array.
+    if ($nav_error) {
+        $r->print(&navmap_errormsg());
+        return(1,$currentphase);
+    }
 
     my ($scanlines,$scan_data)=&scantron_getfile();
     for (my $i=0;$i<=$scanlines->{'count'};$i++) {
@@ -7266,7 +7459,12 @@ sub scantron_validate_doublebubble {
     #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.
+    my $nav_error;
+    &scantron_get_maxbubble(\$nav_error); # parse needs the bubble line array.
+    if ($nav_error) {
+        $r->print(&navmap_errormsg());
+        return(1,$currentphase);
+    }
 
     for (my $i=0;$i<=$scanlines->{'count'};$i++) {
 	my $line=&scantron_get_line($scanlines,$scan_data,$i);
@@ -7284,6 +7482,7 @@ sub scantron_validate_doublebubble {
 
 
 sub scantron_get_maxbubble {
+    my ($nav_error) = @_;
     if (defined($env{'form.scantron_maxbubble'}) &&
 	$env{'form.scantron_maxbubble'}) {
 	&restore_bubble_lines();
@@ -7294,6 +7493,12 @@ sub scantron_get_maxbubble {
 	&Apache::lonnet::decode_symb($env{'form.selectpage'});
 
     my $navmap=Apache::lonnavmaps::navmap->new();
+    unless (ref($navmap)) {
+        if (ref($nav_error)) {
+            $$nav_error = 1;
+        }
+        return;
+    }
     my $map=$navmap->getResourceByUrl($sequence);
     my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
 
@@ -7383,7 +7588,11 @@ sub scantron_validate_missingbubbles {
     #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();
+    my $nav_error;
+    my $max_bubble=&scantron_get_maxbubble(\$nav_error);
+    if ($nav_error) {
+        return(1,$currentphase);
+    }
     if (!$max_bubble) { $max_bubble=2**31; }
     for (my $i=0;$i<=$scanlines->{'count'};$i++) {
 	my $line=&scantron_get_line($scanlines,$scan_data,$i);
@@ -7443,13 +7652,24 @@ sub scantron_process_students {
     my $classlist=&Apache::loncoursedata::get_classlist();
     my %idmap=&username_to_idmap($classlist);
     my $navmap=Apache::lonnavmaps::navmap->new();
+    unless (ref($navmap)) {
+        $r->print(&navmap_errormsg());
+        return '';
+    }  
     my $map=$navmap->getResourceByUrl($sequence);
     my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
     my (%grader_partids_by_symb,%grader_randomlists_by_symb);
     &graders_resources_pass(\@resources,\%grader_partids_by_symb,
                             \%grader_randomlists_by_symb);
+    my $resource_error;
     foreach my $resource (@resources) {
-        my $ressymb = $resource->symb();
+        my $ressymb;
+        if (ref($resource)) {
+            $ressymb = $resource->symb();
+        } else {
+            $resource_error = 1;
+            last;
+        }
         my ($analysis,$parts) =
             &scantron_partids_tograde($resource,$env{'request.course.id'},
                                       $env{'user.name'},$env{'user.domain'},1);
@@ -7461,6 +7681,10 @@ sub scantron_process_students {
             }
         }
     }
+    if ($resource_error) {
+        $r->print(&navmap_errormsg());
+        return '';
+    }
 
     my ($uname,$udom);
     my $result= <<SCANTRONFORM;
@@ -7475,8 +7699,8 @@ SCANTRONFORM
     
     my $lock=&Apache::lonnet::set_lock(&mt('Grading bubblesheet exam'));
     my $count=&get_todo_count($scanlines,$scan_data);
-    my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Scantron Status',
- 				    'Scantron Progress',$count,
+    my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Bubblesheet Status',
+ 				    'Bubblesheet Progress',$count,
 				    'inline',undef,'scantronupload');
     &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,
 					  'Processing first student');
@@ -7485,7 +7709,12 @@ SCANTRONFORM
     my $i=-1;
     my $started;
 
-    &scantron_get_maxbubble();	# Need the bubble lines array to parse.
+    my $nav_error;
+    &scantron_get_maxbubble(\$nav_error); # Need the bubble lines array to parse.
+    if ($nav_error) {
+        $r->print(&navmap_errormsg());
+        return '';
+    }
 
     # If an ssi failed in scantron_get_maxbubble, put an error message out to
     # the user and return.
@@ -7526,9 +7755,15 @@ SCANTRONFORM
  	}
   	($uname,$udom)=split(/:/,$uname);
 
-        my %partids_by_symb;
+        my (%partids_by_symb,$res_error);
         foreach my $resource (@resources) {
-            my $ressymb = $resource->symb();
+            my $ressymb;
+            if (ref($resource)) {
+                $ressymb = $resource->symb();
+            } else {
+                $res_error = 1;
+                last;
+            }
             if ((exists($grader_randomlists_by_symb{$ressymb})) ||
                 (ref($grader_partids_by_symb{$ressymb}) ne 'ARRAY')) {
                 my ($analysis,$parts) =
@@ -7539,6 +7774,12 @@ SCANTRONFORM
             }
         }
 
+        if ($res_error) {
+            &scantron_add_delay(\@delayqueue,$line,
+                                'An error occurred while grading student '.$uname,2);
+            next;
+        }
+
 	&Apache::lonxml::clear_problem_counter();
   	&Apache::lonnet::appenv($scan_record);
 
@@ -7701,39 +7942,67 @@ sub grade_student_bubbles {
 
 sub scantron_upload_scantron_data {
     my ($r)=@_;
-    $r->print(&Apache::loncommon::coursebrowser_javascript($env{'request.role.domain'}));
+    my $dom = $env{'request.role.domain'};
+    my $domdesc = &Apache::lonnet::domain($dom,'description');
+    $r->print(&Apache::loncommon::coursebrowser_javascript($dom));
     my $select_link=&Apache::loncommon::selectcourse_link('rules','courseid',
 							  'domainid',
-							  'coursename');
-    my $domsel=&Apache::loncommon::select_dom_form($env{'request.role.domain'},
-						   'domainid');
+							  'coursename',$dom);
+    my $syllabuslink = '<a href="javascript:ToSyllabus();">'.&mt('Syllabus').'</a>'.
+                       ('&nbsp'x2).&mt('(shows course personnel)'); 
     my $default_form_data=&defaultFormData(&get_symb($r,1));
-    $r->print('
-<script type="text/javascript" language="javascript">
+    my $nofile_alert = &mt('Please use the browse button to select a file from your local directory.');
+    my $nocourseid_alert = &mt("Please use the 'Select Course' link to open a separate window where you can search for a course to which a file can be uploaded.");
+    $r->print(&Apache::lonhtmlcommon::scripttag('
     function checkUpload(formname) {
 	if (formname.upfile.value == "") {
-	    alert("'.&mt('Please use the browse button to select a file from your local directory.').'");
+	    alert("'.$nofile_alert.'");
 	    return false;
 	}
+        if (formname.courseid.value == "") {
+            alert("'.$nocourseid_alert.'");
+            return false;
+        }
 	formname.submit();
     }
-</script>
+
+    function ToSyllabus() {
+        var cdom = '."'$dom'".';
+        var cnum = document.rules.courseid.value;
+        if (cdom == "" || cdom == null) {
+            return;
+        }
+        if (cnum == "" || cnum == null) {
+           return;
+        }
+        syllwin=window.open("/public/"+cdom+"/"+cnum+"/syllabus","LONCAPASyllabus",
+                            "height=350,width=350,scrollbars=yes,menubar=no");
+        return;
+    }
+
+'));
+    $r->print('
+<h3>'.&mt('Send scanned bubblesheet data to a course').'</h3>
 
 <form enctype="multipart/form-data" action="/adm/grades" name="rules" method="post">
-'.$default_form_data.'
-<table>
-<tr><td>'.$select_link.'                             </td></tr>
-<tr><td>'.&mt('Course ID:').'     </td>
-    <td><input name="courseid"   type="text" />      </td></tr>
-<tr><td>'.&mt('Course Name:').'   </td>
-    <td><input name="coursename" type="text" />      </td></tr>
-<tr><td>'.&mt('Domain:').'        </td>
-    <td>'.$domsel.'                                  </td></tr>
-<tr><td>'.&mt('File to upload:').'</td>
-    <td><input type="file" name="upfile" size="50" /></td></tr>
-</table>
+'.$default_form_data.
+  &Apache::lonhtmlcommon::start_pick_box().
+  &Apache::lonhtmlcommon::row_title(&mt('Course ID')).
+  '<input name="courseid" type="text" size="30" />'.$select_link.
+  &Apache::lonhtmlcommon::row_closure().
+  &Apache::lonhtmlcommon::row_title(&mt('Course Name')).
+  '<input name="coursename" type="text" size="30" />'.$syllabuslink.
+  &Apache::lonhtmlcommon::row_closure().
+  &Apache::lonhtmlcommon::row_title(&mt('Domain')).
+  '<input name="domainid" type="hidden" />'.$domdesc.
+  &Apache::lonhtmlcommon::row_closure().
+  &Apache::lonhtmlcommon::row_title(&mt('File to upload')).
+  '<input type="file" name="upfile" size="50" />'.
+  &Apache::lonhtmlcommon::row_closure(1).
+  &Apache::lonhtmlcommon::end_pick_box().'<br />
+
 <input name="command" value="scantronupload_save" type="hidden" />
-<input type="button" onClick="javascript:checkUpload(this.form);" value="'.&mt('Upload Scantron Data').'" />
+<input type="button" onclick="javascript:checkUpload(this.form);" value="'.&mt('Upload Bubblesheet Data').'" />
 </form>
 ');
     return '';
@@ -7751,7 +8020,7 @@ sub scantron_upload_scantron_data_save {
     if (!&Apache::lonnet::allowed('usc',$env{'form.domainid'}) &&
 	!&Apache::lonnet::allowed('usc',
 			    $env{'form.domainid'}.'_'.$env{'form.courseid'})) {
-	$r->print(&mt("You are not allowed to upload Scantron data to the requested course.")."<br />");
+	$r->print(&mt("You are not allowed to upload bubblesheet data to the requested course.")."<br />");
 	if ($symb) {
 	    $r->print(&show_grading_menu_form($symb));
 	} else {
@@ -7760,36 +8029,25 @@ sub scantron_upload_scantron_data_save {
 	return '';
     }
     my %coursedata=&Apache::lonnet::coursedescription($env{'form.domainid'}.'_'.$env{'form.courseid'});
-    $r->print(&mt("Doing upload to [_1]",$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;
+    my $uploadedfile;
+    $r->print('<h3>'.&mt("Uploading file to [_1]",$coursedata{'description'}).'</h3>');
     if (length($env{'form.upfile'}) < 2) {
-	$r->print(&mt("<span class=\"LC_error\">Error:</span> The file you attempted to upload, [_1]  contained no information. Please check that you entered the correct filename.",'<span class="LC_filename">'.&HTML::Entities::encode($env{'form.upfile.filename'},'<>&"')."</span>"));
+        $r->print(&mt('[_1]Error:[_2] The file you attempted to upload, [_3] contained no information. Please check that you entered the correct filename.','<span class="LC_error">','</span>','<span class="LC_filename">'.&HTML::Entities::encode($env{'form.upfile.filename'},'<>&"').'</span>'));
     } else {
-	my $result=&Apache::lonnet::finishuserfileupload($env{'form.courseid'},$env{'form.domainid'},'upfile',$fname);
-	if ($result =~ m|^/uploaded/|) {
-	    $r->print(&mt("<span class=\"LC_success\">Success:</span> Successfully uploaded [_1] bytes of data into location [_2]",
-			  (length($env{'form.upfile'})-1),
-			  '<span class="LC_filename">'.$result."</span>"));
+        my $result = 
+            &Apache::lonnet::userfileupload('upfile','','scantron','','','',
+                                            $env{'form.courseid'},$env{'form.domainid'});
+	if ($result =~ m{^/uploaded/}) {
+	    $r->print(&mt('[_1]Success:[_2] Successfully uploaded [_3] bytes of data into location: [_4]',
+                          '<span class="LC_success">','</span>',(length($env{'form.upfile'})-1),
+			  '<span class="LC_filename">'.$result.'</span>'));
+            ($uploadedfile) = ($result =~ m{/([^/]+)$});
+            $r->print(&validate_uploaded_scantron_file($env{'form.domainid'},
+                                                       $env{'form.courseid'},$uploadedfile));
 	} else {
-	    $r->print(&mt("<span class=\"LC_error\">Error:</span> An error ([_1]) occurred when attempting to upload the file, [_2]",
-			  $result,
-			  '<span class="LC_filename">'.&HTML::Entities::encode($env{'form.upfile.filename'},'<>&"')."</span>"));
-
+	    $r->print(&mt('[_1]Error:[_2] An error ([_3]) occurred when attempting to upload the file, [_4]',
+                          '<span class="LC_error">','</span>',$result,
+			  '<span class="LC_filename">'.&HTML::Entities::encode($env{'form.upfile.filename'},'<>&"').'</span>'));
 	}
     }
     if ($symb) {
@@ -7800,6 +8058,92 @@ sub scantron_upload_scantron_data_save {
     return '';
 }
 
+sub validate_uploaded_scantron_file {
+    my ($cdom,$cname,$fname) = @_;
+    my $scanlines=&Apache::lonnet::getfile('/uploaded/'.$cdom.'/'.$cname.'/'.$fname);
+    my @lines;
+    if ($scanlines ne '-1') {
+        @lines=split("\n",$scanlines,-1);
+    }
+    my $output;
+    if (@lines) {
+        my (%counts,$max_match_format);
+        my ($max_match_count,$max_match_pct) = (0,0);
+        my $classlist = &Apache::loncoursedata::get_classlist($cdom,$cname);
+        my %idmap = &username_to_idmap($classlist);
+        foreach my $key (keys(%idmap)) {
+            my $lckey = lc($key);
+            $idmap{$lckey} = $idmap{$key};
+        }
+        my %unique_formats;
+        my @formatlines = &get_scantronformat_file();
+        foreach my $line (@formatlines) {
+            chomp($line);
+            my @config = split(/:/,$line);
+            my $idstart = $config[5];
+            my $idlength = $config[6];
+            if (($idstart ne '') && ($idlength > 0)) {
+                if (ref($unique_formats{$idstart.':'.$idlength}) eq 'ARRAY') {
+                    push(@{$unique_formats{$idstart.':'.$idlength}},$config[0].':'.$config[1]); 
+                } else {
+                    $unique_formats{$idstart.':'.$idlength} = [$config[0].':'.$config[1]];
+                }
+            }
+        }
+        foreach my $key (keys(%unique_formats)) {
+            my ($idstart,$idlength) = split(':',$key);
+            %{$counts{$key}} = (
+                               'found'   => 0,
+                               'total'   => 0,
+                              );
+            foreach my $line (@lines) {
+                next if ($line =~ /^#/);
+                next if ($line =~ /^[\s\cz]*$/);
+                my $id = substr($line,$idstart-1,$idlength);
+                $id = lc($id);
+                if (exists($idmap{$id})) {
+                    $counts{$key}{'found'} ++;
+                }
+                $counts{$key}{'total'} ++;
+            }
+            if ($counts{$key}{'total'}) {
+                my $percent_match = (100*$counts{$key}{'found'})/($counts{$key}{'total'});
+                if (($max_match_format eq '') || ($percent_match > $max_match_pct)) {
+                    $max_match_pct = $percent_match;
+                    $max_match_format = $key;
+                    $max_match_count = $counts{$key}{'total'};
+                }
+            }
+        }
+        if (ref($unique_formats{$max_match_format}) eq 'ARRAY') {
+            my $format_descs;
+            my $numwithformat = @{$unique_formats{$max_match_format}};
+            for (my $i=0; $i<$numwithformat; $i++) {
+                my ($name,$desc) = split(':',$unique_formats{$max_match_format}[$i]);
+                if ($i<$numwithformat-2) {
+                    $format_descs .= '"<i>'.$desc.'</i>", ';
+                } elsif ($i==$numwithformat-2) {
+                    $format_descs .= '"<i>'.$desc.'</i>" '.&mt('and').' ';
+                } elsif ($i==$numwithformat-1) {
+                    $format_descs .= '"<i>'.$desc.'</i>"';
+                }
+            }
+            my $showpct = sprintf("%.0f",$max_match_pct).'%';
+            $output .= '<br />'.&mt('Comparison of student IDs in the uploaded file with the course roster found matches for [_1] of the [_2] entries in the file (for the format defined for [_3]).','<b>'.$showpct.'</b>','<b>'.$max_match_count.'</b>',$format_descs).
+                       '<br />'.&mt('A low percentage of matches results from one of the following:').'<ul>'.
+                       '<li>'.&mt('The file was uploaded to the wrong course').'</li>'.
+                       '<li>'.&mt('The data are not in the format expected for the domain: [_1]',
+                                  '<i>'.$cdom.'</i>').'</li>'.
+                       '<li>'.&mt('Students did not bubble their IDs, or mis-bubbled them').'</li>'.
+                       '<li>'.&mt('The course roster is not up to date').'</li>'.
+                       '</ul>';
+        }
+    } else {
+        $output = '<span class="LC_warning">'.&mt('Uploaded file contained no data').'</span>';
+    }
+    return $output;
+}
+
 sub valid_file {
     my ($requested_file)=@_;
     foreach my $filename (sort(&scantron_filenames())) {
@@ -7865,6 +8209,10 @@ sub checkscantron_results {
     my $classlist=&Apache::loncoursedata::get_classlist();
     my %idmap=&Apache::grades::username_to_idmap($classlist);
     my $navmap=Apache::lonnavmaps::navmap->new();
+    unless (ref($navmap)) {
+        $r->print(&navmap_errormsg());
+        return '';
+    }
     my $map=$navmap->getResourceByUrl($sequence);
     my @resources=$navmap->retrieveResources($map,\&scantron_filter,1,0);
     my (%grader_partids_by_symb,%grader_randomlists_by_symb);
@@ -7879,12 +8227,16 @@ sub checkscantron_results {
     my %completedstudents;
 
     my $count=&Apache::grades::get_todo_count($scanlines,$scan_data);
-    my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Scantron/Submissions Comparison Status',
-                                    'Progress of Scantron Data/Submission Records Comparison',$count,
+    my %prog_state=&Apache::lonhtmlcommon::Create_PrgWin($r,'Bubblesheet/Submissions Comparison Status',
+                                    'Progress of Bubblesheet Data/Submission Records Comparison',$count,
                                     'inline',undef,'checkscantron');
     my ($username,$domain,$started);
-
-    &scantron_get_maxbubble();  # Need the bubble lines array to parse.
+    my $nav_error;
+    &scantron_get_maxbubble(\$nav_error); # Need the bubble lines array to parse.
+    if ($nav_error) {
+        $r->print(&navmap_errormsg());
+        return '';
+    }
 
     &Apache::lonhtmlcommon::Update_PrgWin($r,\%prog_state,
                                           'Processing first student');
@@ -7957,14 +8309,14 @@ sub checkscantron_results {
                 if ($scandata{$pid} eq $record{$pid}) {
                     my $css_class = ($passed % 2)?'LC_odd_row':'LC_even_row';
                     $okstudents .= '<tr class="'.$css_class.'">'.
-'<td>'.&mt('Scantron').'</td><td>'.$showscandata.'</td><td rowspan="2">'.$last.'</td><td rowspan="2">'.$pid.'</td>'."\n".
+'<td>'.&mt('Bubblesheet').'</td><td>'.$showscandata.'</td><td rowspan="2">'.$last.'</td><td rowspan="2">'.$pid.'</td>'."\n".
 '</tr>'."\n".
 '<tr class="'.$css_class.'">'."\n".
 '<td>Submissions</td><td>'.$showrecord.'</td></tr>'."\n";
                     $passed ++;
                 } else {
                     my $css_class = ($failed % 2)?'LC_odd_row':'LC_even_row';
-                    $badstudents .= '<tr class="'.$css_class.'"><td>'.&mt('Scantron').'</td><td><span class="LC_nobreak">'.$scandata{$pid}.'</span></td><td rowspan="2">'.$last.'</td><td rowspan="2">'.$pid.'</td>'."\n".
+                    $badstudents .= '<tr class="'.$css_class.'"><td>'.&mt('Bubblesheet').'</td><td><span class="LC_nobreak">'.$scandata{$pid}.'</span></td><td rowspan="2">'.$last.'</td><td rowspan="2">'.$pid.'</td>'."\n".
 '</tr>'."\n".
 '<tr class="'.$css_class.'">'."\n".
 '<td>Submissions</td><td><span class="LC_nobreak">'.$record{$pid}.'</span></td>'."\n".
@@ -7975,10 +8327,10 @@ sub checkscantron_results {
             }
         }
     }
-    $r->print('<p>'.&mt('Comparison of scantron data (including corrections) with corresponding submission records (most recent submission) for <b>[quant,_1,student]</b>  ([_2] scantron lines/student).',$numstudents,$env{'form.scantron_maxbubble'}).'</p>');
+    $r->print('<p>'.&mt('Comparison of bubblesheet data (including corrections) with corresponding submission records (most recent submission) for <b>[quant,_1,student]</b>  ([_2] scantron lines/student).',$numstudents,$env{'form.scantron_maxbubble'}).'</p>');
     $r->print('<p>'.&mt('Exact matches for <b>[quant,_1,student]</b>.',$passed).'<br />'.&mt('Discrepancies detected for <b>[quant,_1,student]</b>.',$failed).'</p>');
     if ($passed) {
-        $r->print(&mt('Students with exact correspondence between scantron data and submissions are as follows:').'<br /><br />');
+        $r->print(&mt('Students with exact correspondence between bubblesheet data and submissions are as follows:').'<br /><br />');
         $r->print(&Apache::loncommon::start_data_table()."\n".
                  &Apache::loncommon::start_data_table_header_row()."\n".
                  '<th>'.&mt('Source').'</th><th>'.&mt('Bubble records').'</th><th>'.&mt('Name').'</th><th>'.&mt('ID').'</th>'.
@@ -7987,14 +8339,14 @@ sub checkscantron_results {
                  &Apache::loncommon::end_data_table().'<br />');
     }
     if ($failed) {
-        $r->print(&mt('Students with differences between scantron data and submissions are as follows:').'<br /><br />');
+        $r->print(&mt('Students with differences between bubblesheet data and submissions are as follows:').'<br /><br />');
         $r->print(&Apache::loncommon::start_data_table()."\n".
                  &Apache::loncommon::start_data_table_header_row()."\n".
                  '<th>'.&mt('Source').'</th><th>'.&mt('Bubble records').'</th><th>'.&mt('Name').'</th><th>'.&mt('ID').'</th>'.
                  &Apache::loncommon::end_data_table_header_row()."\n".
                  $badstudents."\n".
                  &Apache::loncommon::end_data_table()).'<br />'.
-                 &mt('Differences can occur if submissions were modified using manual grading after a scantron grading pass.').'<br />'.&mt('If unexpected discrepancies were detected, it is recommended that you inspect the original scantron sheets.');  
+                 &mt('Differences can occur if submissions were modified using manual grading after a bubblesheet grading pass.').'<br />'.&mt('If unexpected discrepancies were detected, it is recommended that you inspect the original bubblesheets.');  
     }
     $r->print('</form><br />'.$grading_menu_button);
     return;
@@ -8209,7 +8561,7 @@ sub grading_menu {
                     		icon => 'addClickerInfoFile.png',
                     		linktitle => 'Specify a file containing the clicker information for this resource.'
                 	    },
-                	    {	linktext => 'Grade/Manage/Review Scantron Forms',
+                	    {	linktext => 'Grade/Manage/Review Bubblesheets',
                     		url => $url4,
                     		permission => 'F',
                     		icon => 'stat.png',
@@ -8235,16 +8587,15 @@ sub grading_menu {
 
     $Str .= Apache::lonhtmlcommon::generate_menu(@menu);
     #$menudata->{'jscript'}
-    $Str .='<hr /><input type="button" value="'.&mt('Verify Receipt').'" '.
-        ' onClick="javascript:checkChoice(document.forms.gradingMenu,\'5\',\'verify\')" '.
+    $Str .='<hr /><input type="button" value="'.&mt('Verify Receipt No.').'" '.
+        ' onclick="javascript:checkChoice(document.forms.gradingMenu,\'5\',\'verify\')" '.
         ' /> '.
         &Apache::lonnet::recprefix($env{'request.course.id'}).
-        '-<input type="text" name="receipt" size="4" onChange="javascript:checkReceiptNo(this.form,\'OK\')" />';
+        '-<input type="text" name="receipt" size="4" onchange="javascript:checkReceiptNo(this.form,\'OK\')" />';
 
     $Str .="</form>\n";
     my $receiptalert = &mt("Please enter a receipt number given by a student in the receipt box.");
-    $request->print(<<GRADINGMENUJS);
-<script type="text/javascript" language="javascript">
+    $request->print(&Apache::lonhtmlcommon::scripttag(<<GRADINGMENUJS));
     function checkChoice(formname,val,cmdx) {
 	if (val <= 2) {
 	    var cmd = radioSelection(formname.radioChoice);
@@ -8277,7 +8628,6 @@ sub grading_menu {
 	}
 	return true;
     }
-</script>
 GRADINGMENUJS
     &commonJSfunctions($request);
     return $Str;    
@@ -8292,8 +8642,7 @@ sub submit_options {
     my $probTitle = &Apache::lonnet::gettitle($symb);
 
     my $receiptalert = &mt("Please enter a receipt number given by a student in the receipt box."); 
-    $request->print(<<GRADINGMENUJS);
-<script type="text/javascript" language="javascript">
+    $request->print(&Apache::lonhtmlcommon::scripttag(<<GRADINGMENUJS));
     function checkChoice(formname,val,cmdx) {
 	if (val <= 2) {
 	    var cmd = radioSelection(formname.radioChoice);
@@ -8326,7 +8675,6 @@ sub submit_options {
 	}
 	return true;
     }
-</script>
 GRADINGMENUJS
     &commonJSfunctions($request);
     my ($table,undef,$hdgrade) = &showResourceInfo($symb,$probTitle);
@@ -8422,7 +8770,7 @@ GRADINGMENUJS
               </label>
             </div>
             <div>
-	      <input type="button" onClick="javascript:checkChoice(this.form,\'2\');" value="'.&mt('Next').' &rarr;" />
+	      <input type="button" onclick="javascript:checkChoice(this.form,\'2\');" value="'.&mt('Next').' &rarr;" />
             </div>
           </div>
 
@@ -8439,7 +8787,7 @@ GRADINGMENUJS
               </label>
             </div>
             <div>
-	      <input type="button" onClick="javascript:checkChoice(this.form,\'2\');" value="'.&mt('Next').' &rarr;" />
+	      <input type="button" onclick="javascript:checkChoice(this.form,\'2\');" value="'.&mt('Next').' &rarr;" />
             </div>
         </div>
   </form>';
@@ -8555,7 +8903,7 @@ sub process_clicker {
     my %checked;
     foreach my $gradingmechanism ('attendance','personnel','specific','given') {
        if ($env{'form.gradingmechanism'} eq $gradingmechanism) {
-          $checked{$gradingmechanism}="checked='checked'";
+          $checked{$gradingmechanism}=' checked="checked"';
        }
     }
 
@@ -8572,8 +8920,7 @@ sub process_clicker {
 						   ('iclicker' => 'i>clicker',
                                                     'interwrite' => 'interwrite PRS'));
     $symb = &Apache::lonenc::check_encrypt($symb);
-    $result.=<<ENDUPFORM;
-<script type="text/javascript">
+    $result.= &Apache::lonhtmlcommon::scripttag(<<ENDUPFORM);
 function sanitycheck() {
 // Accept only integer percentages
    document.forms.gradesupload.pcorrect.value=Math.round(document.forms.gradesupload.pcorrect.value);
@@ -8611,7 +8958,8 @@ function sanitycheck() {
 // Remember the old state
    document.forms.gradesupload.waschecked.value=newgradingchoice;
 }
-</script>
+ENDUPFORM
+    $result.= <<ENDUPFORM;
 <form method="post" enctype="multipart/form-data" action="/adm/grades" name="gradesupload">
 <input type="hidden" name="symb" value="$symb" />
 <input type="hidden" name="command" value="processclickerfile" />
@@ -8619,18 +8967,18 @@ function sanitycheck() {
 <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>
+<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" />
-<br /><label><input type="radio" name="gradingmechanism" value="given" $checked{'given'} onClick="sanitycheck()" />$given </label>
+<br /><label><input type="radio" name="gradingmechanism" value="given"$checked{'given'} onclick="sanitycheck()" />$given </label>
 <br />&nbsp;&nbsp;&nbsp;
 <input type="text" name="givenanswer" size="50" />
 <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>
+<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
     $result.='</td></tr></table>'."\n".
              '</td></tr></table><br /><br />'."\n";
@@ -8878,7 +9226,11 @@ sub assign_clicker_grades {
     my ($symb)=&get_symb($r);
     if (!$symb) {return '';}
 # See which part we are saving to
-    my ($partlist,$handgrade,$responseType) = &response_type($symb);
+    my $res_error;
+    my ($partlist,$handgrade,$responseType) = &response_type($symb,\$res_error);
+    if ($res_error) {
+        return &navmap_errormsg();
+    }
 # FIXME: This should probably look for the first handgradeable part
     my $part=$$partlist[0];
 # Start screen output
@@ -8942,13 +9294,13 @@ ENDHEADER
           my $sum=0;
           my $realnumber=$number;
           for (my $i=0;$i<$number;$i++) {
-             if ($answer[$i]) {
+             if  ($correct[$i] eq '-') {
+                $realnumber--;
+             } elsif ($answer[$i]) {
                 if ($gradingmechanism eq 'attendance') {
                    $sum+=$pcorrect;
-                } elsif ($answer[$i] eq '*') {
+                } elsif ($correct[$i] eq '*') {
                    $sum+=$pcorrect;
-                } elsif ($answer[$i] eq '-') {
-                   $realnumber--;
                 } else {
                    if ($answer[$i] eq $correct[$i]) {
                       $sum+=$pcorrect;
@@ -8982,6 +9334,13 @@ ENDHEADER
     return $result.&show_grading_menu_form($symb);
 }
 
+sub navmap_errormsg {
+    return '<div class="LC_error">'.
+           &mt('An error occurred retrieving information about resources in the course.').'<br />'.
+           &mt('It is recommended that you [_1]re-initialize the course[_2] and then return to this grading page.','<a href="/adm/roles?selectrole=1&newrole='.$env{'request.role'}.'">','</a>').
+           '</div>';
+}
+
 sub handler {
     my $request=$_[0];
     &reset_caches();
@@ -9102,7 +9461,7 @@ sub handler {
         } elsif ($command eq 'checksubmissions' && $perm{'vgr'}) {
             $request->print(&checkscantron_results($request));     
 	} elsif ($command) {
-	    $request->print("Access Denied ($command)");
+	    $request->print('<p class="LC_error">'.&mt('Access Denied ([_1])',$command).'</p>');
 	}
     }
     if ($ssi_error) {
@@ -9207,6 +9566,13 @@ ssi_with_retries()
 
 =item  scantron_get_maxbubble() : 
 
+   Arguments:
+       $nav_error  - Reference to scalar which is a flag to indicate a
+                      failure to retrieve a navmap object.
+       if $nav_error is set to 1 by scantron_get_maxbubble(), the 
+       calling routine should trap the error condition and display the warning
+       found in &navmap_errormsg().
+
    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()
@@ -9272,6 +9638,11 @@ ssi_with_retries()
    Validates all scanlines in the selected file to not have any
    invalid or underspecified student/employee IDs
 
+=item navmap_errormsg() :
+
+   Returns HTML mark-up inside a <div></div> with a link to re-initialize the course.
+   Should be called whenever the request to instantiate a navmap object fails.  
+
 =back
 
 =cut