--- loncom/interface/lonsyllabus.pm	2013/05/10 17:49:11	1.122
+++ loncom/interface/lonsyllabus.pm	2013/05/16 20:03:51	1.127
@@ -1,7 +1,7 @@
 # The LearningOnline Network
 # Syllabus
 #
-# $Id: lonsyllabus.pm,v 1.122 2013/05/10 17:49:11 raeburn Exp $
+# $Id: lonsyllabus.pm,v 1.127 2013/05/16 20:03:51 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -71,6 +71,7 @@ sub handler {
     }
 # ------------------------------------- There is such a course, get environment
     my %courseenv=&Apache::lonnet::dump('environment',$cdom,$cnum);
+    my $crstype = &Apache::loncommon::course_type();
 
 # ------------------------------------------------------------ Print the screen
 
@@ -117,24 +118,26 @@ sub handler {
         }
         unless ($allowed && $forceedit) {
             my $file=&Apache::lonnet::filelocation("",$item);
-            if ($file =~ /\.(sty|css|js|txt|tex|html?)$/) {  
-                my $filetype;
-                if ($file =~ /\.(sty|css|js|txt|tex)$/) {
-                    $filetype=$1;
-                } else {
-                    $filetype='html';
-                }
-                my $result = '';
+            if ($file =~ /\.(tex|x?html?)$/) {  
+                my $filetype = $1;
                 my $filecontents=&Apache::lonnet::getfile($file);
                 if ($filecontents eq -1) {
                     $r->print(&mt('Syllabus file unavailable'));
-                } elsif ($filetype eq 'html') {
+                } elsif ($filetype eq 'tex') {
+                    my $result = &Apache::lontexconvert::converted(\$filecontents,
+                                                                $env{'form.texengine'});
+                    my %args;
+                    &get_breadcrumbs($cdom,$cnum,$crstype,\%args);
+                    $r->print(&Apache::loncommon::start_page("Syllabus",undef,\%args).
+                              $result.
+                              &Apache::loncommon::end_page());
+                } else {
                     my %mystyle;
                     &Apache::structuretags::reset_problem_globals();
                     my $oldfile = $env{'request.filename'};
                     $env{'request.filename'} = $item;
-                    $result = &Apache::lonxml::xmlparse($r,'web',$filecontents,
-                                                        '',%mystyle);
+                    my $result = &Apache::lonxml::xmlparse($r,'web',$filecontents,
+                                                           '',%mystyle);
                     &Apache::structuretags::reset_problem_globals();
                     &Apache::lonhomework::finished_parsing();
                     $env{'request.filename'} = $oldfile;
@@ -153,7 +156,6 @@ sub handler {
         }
     }
 
-    my $crstype = &Apache::loncommon::course_type();
 
 # ------------------------------ The buck stops here: internal syllabus display
 # --------------------------------------------------------- The syllabus fields
@@ -330,18 +332,18 @@ sub handler {
             }
             &Apache::lontemplate::print_start_template($r,&mt('Personnel'),'LC_Box',
                                                        'box_000_showpeople',$display);
-            $r->print(&get_personnel($r,$target,$cdom,$cnum,$allowed));
+            $r->print(&get_personnel($r,$target,$cdom,$cnum,$allowed,$crstype,\%syllabus));
             &Apache::lontemplate::print_end_template($r);
         } else {
             unless ($hidepersonnel) {
                 &Apache::lontemplate::print_start_template($r,&mt('Personnel'),'LC_Box');
-                $r->print(&get_personnel($r,$target,$cdom,$cnum,$allowed));  
+                $r->print(&get_personnel($r,$target,$cdom,$cnum,$allowed,$crstype,\%syllabus));  
                 &Apache::lontemplate::print_end_template($r);
             }
         }
     } else {
         unless ($hidepersonnel) {
-            $r->print(&get_personnel($r,$target,$cdom,$cnum,$allowed));
+            $r->print(&get_personnel($r,$target,$cdom,$cnum,$allowed,$crstype,%syllabus));
         }
     }
 # -------------------------------------------------------------- Announcements?
@@ -664,7 +666,26 @@ ENDSCRIPT
               {href=>$r->uri,
                text=>"Course syllabus"});
         $args->{'bread_crumbs'} = $brcrum;
-    } elsif ($env{'form.folderpath'} =~ /^supplemental/) {
+    } else {
+        &get_breadcrumbs($cdom,$cnum,$crstype,$args);
+    }
+    if ($allowed) {
+        my %loaditem = (
+                         onload => 'setTemplateBoxes();',
+                       );
+        $args->{'add_entries'} = \%loaditem;
+    }
+    my $start_page =
+        &Apache::loncommon::start_page("Syllabus", $rss_link.$js,$args);
+    if ($start_page) {
+        $r->print($start_page);
+    }
+}
+
+sub get_breadcrumbs{
+    my ($cdom,$cnum,$crstype,$args) = @_;
+    return unless (ref($args) eq 'HASH');
+    if ($env{'form.folderpath'} =~ /^supplemental/) {
         my $title = $env{'form.title'};
         if ($title eq '') {
             $title = &mt('Syllabus');
@@ -685,17 +706,7 @@ ENDSCRIPT
                                       ];
         }
     }
-    if ($allowed) {
-        my %loaditem = (
-                         onload => 'setTemplateBoxes();',
-                       );
-        $args->{'add_entries'} = \%loaditem;
-    }
-    my $start_page =
-        &Apache::loncommon::start_page("Syllabus", $rss_link.$js,$args);
-    if ($start_page) {
-        $r->print($start_page);
-    }
+    return;
 }
 
 sub chooser {
@@ -817,8 +828,16 @@ sub syllabus_file_info {
     my $absurl = $protocol.'://'.&Apache::lonnet::hostname($lonhost).$item;
     my ($filename) = ($item =~ m{([^/]+)$});
     my $file=&Apache::lonnet::filelocation("",$item);
-    my $depbutton;
-    if ($file =~ /\.html?$/) {
+    my ($depbutton,$filetype,$editable);
+    if ($file =~ /\.(xhtml|xml|tex|html|htm)$/) {
+        $filetype=$1;
+    }
+    if ($filetype) {
+        unless ($filetype eq 'tex') {
+            $filetype='html';
+        }
+    }
+    if ($filetype eq 'html') {
         my $filecontents=&Apache::lonnet::getfile($file);
         unless ($filecontents eq -1) {
             my $mm = new File::MMagic;
@@ -833,12 +852,13 @@ sub syllabus_file_info {
                                                                  \%codebase,
                                                                  {'context' => 'rewrites',
                                                                   'ignore_remote_references' => 1,});
-                $depbutton = (' ' x 3).
-                             &editfile_button($item,$context).
-                             &editbutton_js();
+                $editable = 1;
             }
         }
     }
+    $depbutton = (' ' x 3).
+                 &editfile_button($item,$context,$editable).
+                 &editbutton_js();
     return ($absurl,$filename,$depbutton);
 }
 
@@ -920,49 +940,121 @@ sub fields_check_uncheck {
 }
 
 sub get_personnel {
-    my ($r,$target,$cdom,$cnum,$allowed) = @_;
+    my ($r,$target,$cdom,$cnum,$allowed,$crstype,$syllabus) = @_;
+    my (%hiddenroles,%hiddenusers);
+    if (ref($syllabus) eq 'HASH') {
+        if (ref($syllabus->{'personnel'}) eq 'HASH') {
+            if ($syllabus->{'personnel'}{'hiderole'}) {
+                map { $hiddenroles{$_} = 1; } split(/,/,$syllabus->{'personnel'}{'hiderole'});
+            }
+            if ($syllabus->{'personnel'}{'hideuser'}) {
+                map { $hiddenusers{$_} = 1; } split(/,/,$syllabus->{'personnel'}{'hideuser'});
+            }
+        }
+    }
     my $output;
-    my %coursepersonnel=&Apache::lonnet::get_course_adv_roles($cdom.'/'.$cnum);
+    my %coursepersonnel=&Apache::lonnet::get_course_adv_roles($cdom.'/'.$cnum,1);
     if ($target ne 'tex') {
-        $r->print(&Apache::lonhtmlcommon::start_pick_box());
+        if ($allowed) {
+            $r->print(&Apache::loncommon::start_data_table().
+                      &Apache::loncommon::start_data_table_header_row().
+                      '<th>'.&mt('Role hidden?').'</th><th>'.&mt('Role').'</th>'.
+                      '<th>'.&mt('Personnel (hidden if checked)').'</th>'.
+                      &Apache::loncommon::end_data_table_header_row());
+        } else {
+            $r->print(&Apache::lonhtmlcommon::start_pick_box());
+        }
     } else {
         $r->print('\begin{tabular}{|p{0.45\textwidth}|p{0.45\textwidth}|}\hline');
     }
     my @personnel=sort(keys(%coursepersonnel));
     my $lastpers=$personnel[$#personnel];
     foreach my $element (@personnel) {
+        unless ($allowed) {
+            next if ($hiddenroles{$element}) 
+        }
+        my ($role,$sec);
+        if ($element =~ /:/) {
+            ($role,$sec) = split(/:/,$element);
+        } else {
+            $role = $element;
+        }
+        my $roletext = &Apache::lonnet::plaintext($role,$crstype);
+        if ($sec) {
+            $roletext .=' ('.&Apache::lonlocal::mt('Section [_1]',$sec).')';
+        }
         if ($target ne 'tex') {
-            $r->print(&Apache::lonhtmlcommon::row_title($element));
+            if ($allowed) {
+                my $checked;
+                if ($hiddenroles{$element}) {
+                    $checked = ' checked="checked"';
+                }
+                $r->print(&Apache::loncommon::start_data_table_row().
+                          '<td>'.
+                          '<input type="checkbox" name="hiderole" value="'.$element.'" '.
+                          $checked.' />'.
+                          '</td><td>'.$roletext.'</td><td>');
+            } else {
+                $r->print(&Apache::lonhtmlcommon::row_title($roletext));
+            }
         } else {
-            $r->print(' '.&Apache::lonxml::xmlparse($r,'tex',$element).' & ');
+            $r->print(' '.&Apache::lonxml::xmlparse($r,'tex',$roletext).' & ');
         }
         my @coursepersonlist;
         foreach my $user (split(/\,/,$coursepersonnel{$element})) {
             my ($puname,$pudom)=split(/\:/,$user);
             if ($target ne 'tex') {
                 my $courseperson = &Apache::loncommon::plainname($puname,$pudom);
-                if (($env{'user.name'} eq '') || ($env{'user.name'} eq 'public') ||
-                    ($env{'user.domain'} eq '') || ($env{'user.domain'} eq 'public')) {
-                    push(@coursepersonlist,$courseperson);
+                my $checked;
+                if ($hiddenusers{$element.'&'.$puname.':'.$pudom}) {
+                    $checked = ' checked="checked"';
+                }
+                if ($allowed) {
+                    my $item = '<span class="LC_nobreak"><label>'.
+                               '<input type="checkbox" name="hideuser" value="'.$element.'&'.$puname.':'.$pudom.'"'.$checked.' />'.
+                               &Apache::loncommon::aboutmewrapper($courseperson
+,
+                                               $puname,$pudom).
+                               '</label>'.('&nbsp;'x2).'</span> ';
+                    push(@coursepersonlist,$item);
+
                 } else {
-                    push(@coursepersonlist,&Apache::loncommon::aboutmewrapper($courseperson,
-                              $puname,$pudom));
+                    next if ($hiddenusers{$element.'&'.$puname.':'.$pudom});
+                    if (($env{'user.name'} eq '') || ($env{'user.name'} eq 'public') ||
+                        ($env{'user.domain'} eq '') || ($env{'user.domain'} eq 'public')) {
+                        push(@coursepersonlist,$courseperson);
+                    } else {
+                        push(@coursepersonlist,&Apache::loncommon::aboutmewrapper($courseperson,
+                                               $puname,$pudom));
+                    }
                 }
             } else {
                 push(@coursepersonlist,&Apache::loncommon::plainname($puname,
                               $pudom).' ');
             }
         }
-        $r->print(join(", ",@coursepersonlist));
+        if ($allowed) {
+            $r->print(join('',@coursepersonlist));
+        } else {
+            $r->print(join(', ',@coursepersonlist));
+        }
         if ($target ne 'tex') {
-            my $lastclose=$element eq $lastpers?1:0;
-            $r->print(&Apache::lonhtmlcommon::row_closure($lastclose));
+            if ($allowed) {
+                $r->print(&Apache::loncommon::end_data_table_row());
+            } else {
+                my $lastclose=$element eq $lastpers?1:0;
+                $r->print(&Apache::lonhtmlcommon::row_closure($lastclose));
+            }
         } else {
             $r->print('\\\\ \hline');
         }
     }
     if ($target ne 'tex') {
-        $r->print(&Apache::lonhtmlcommon::end_pick_box());
+        if ($allowed) {
+            $r->print(&Apache::loncommon::end_data_table());
+        } else {
+            $r->print(&Apache::lonhtmlcommon::end_pick_box());
+        }
     } else {
         $r->print('\end{tabular}\\\\');
     }
@@ -1010,6 +1102,33 @@ sub save_changes {
                     my ($prefix) = split(/_/,$field);
                     $syllabus->{'uploaded.fields'} .= $prefix.',';
                 }
+                if ($field eq '000_showpeople') {
+                    my @hideusers = &Apache::loncommon::get_env_multiple('form.hideuser');
+                    my @hideroles = &Apache::loncommon::get_env_multiple('form.hiderole');
+                    my %coursepersonnel=&Apache::lonnet::get_course_adv_roles($cdom.'/'.$cnum,1);
+                    my %personnel;
+                    foreach my $key (keys(%coursepersonnel)) {
+                        map { $personnel{$key}{$_} = 1; } split(/,/,$coursepersonnel{$key});
+                    }
+                    %{$syllabus->{'personnel'}} = ();
+                    $syllabus->{'personnel'}{'hideuser'} = '';
+                    $syllabus->{'personnel'}{'hiderole'} = '';
+                    foreach my $role (@hideroles) {
+                        if (exists($personnel{$role})) {
+                            $syllabus->{'personnel'}{'hiderole'} .= $role.',';
+                        }
+                    }
+                    foreach my $item (@hideusers) {
+                        my ($role,$user) = split(/\&/,$item);
+                        if (ref($personnel{$role}) eq 'HASH') {
+                            if ($personnel{$role}{$user}) {
+                                $syllabus->{'personnel'}{'hideuser'} .= $item.',';
+                            }
+                        }
+                    }
+                    $syllabus->{'personnel'}{'hideuser'} =~ s/,$//;
+                    $syllabus->{'personnel'}{'hiderole'} =~ s/,$//;
+                }
             }
             $syllabus->{'uploaded.fields'} =~ s/,$//;
         }
@@ -1059,28 +1178,9 @@ sub save_changes {
         $syllabus->{'uploaded.lastmodified'} = $now;
         my $putres = &Apache::lonnet::put('syllabus',$syllabus,$cdom,$cnum);
         if ($putres eq 'ok') {
-            my %storehash;
-            if ($courseenv->{'uploadedsyllabus'}) {
-                &Apache::lonnet::delenv('course.'.$env{'request.course.id'}.'.uploadedsyllabus');
-                $storehash{'uploadedsyllabus'} = '';
-            }
-            if ($courseenv->{'externalsyllabus'}) {
-                &Apache::lonnet::delenv('course.'.$env{'request.course.id'}.'.externalsyllabus');
-                $storehash{'externalsyllabus'} = '';
-            }
-            if ($courseenv->{'minimalsyllabus'}) {
-                &Apache::lonnet::delenv('course.'.$env{'request.course.id'}.'.minimalsyllabus');
-                $storehash{'minimalsyllabus'} = '';
-            }
-            $storehash{'updatedsyllabus'} = $now;
-            &Apache::lonnet::put('environment',\%storehash,$cdom,$cnum);
-            &Apache::lonnet::appenv({'course.'.$env{'request.course.id'}.'.updatedsyllabus' => $now});
-            if (($courseenv->{'externalsyllabus'} || $courseenv->{'uploadedsyllabus'}) ||
-                ($courseenv->{'minimalsyllabus'})) {
-                undef($uploaded);
-                undef($external);
-                undef($minimal);
-            }
+            ($uploaded,$minimal,$external) = 
+                &update_syllabus_env($cdom,$cnum,$courseenv,$env{'form.choice'},$uploaded,
+                                     $minimal,$external);
             $output = '<div>'.
                       &Apache::lonhtmlcommon::confirm_success(&mt('Template saved.')).
                       '</div>';
@@ -1095,21 +1195,9 @@ sub save_changes {
                 $output = '<div class="LC_info">'.
                           &mt('External URL unchanged.').
                           '</div>';
-                if ($uploaded) {
-                    my $prefix;
-                    my $home=&Apache::lonnet::homeserver($cnum,$cdom);
-                    if ($home ne 'no_host') {
-                        my $protocol = $Apache::lonnet::protocol{$home};
-                        $protocol = 'http' if ($protocol ne 'https');
-                        $prefix = $protocol.'://'.&Apache::lonnet::hostname($home);
-                    }
-                    unless ($external =~ m{^\Q$prefix/uploaded/$cdom/$cnum/portfolio/syllabus\E}) {
-                        &Apache::lonnet::delenv('course.'.$env{'request.course.id'}.'.uploadedsyllabus');
-                        &Apache::lonnet::put('environment',{uploadedsyllabus => ''},
-                                             $cdom,$cnum);
-                        undef($uploaded);
-                    }
-                }
+                ($uploaded,$minimal,$external) =
+                    &update_syllabus_env($cdom,$cnum,$courseenv,$env{'form.choice'},$uploaded,
+                                         $minimal,$external);
             } else {
                 $external=$env{'form.externalsyllabus'};
                 $external =~ s/(`)//g;
@@ -1121,21 +1209,9 @@ sub save_changes {
                     $output = '<div>'.
                               &Apache::lonhtmlcommon::confirm_success(&mt('External URL saved.')).
                              '</div>';
-                    if ($uploaded) {
-                        my $prefix;
-                        my $home=&Apache::lonnet::homeserver($cnum,$cdom);
-                        if ($home ne 'no_host') {
-                            my $protocol = $Apache::lonnet::protocol{$home};
-                            $protocol = 'http' if ($protocol ne 'https');
-                            $prefix = $protocol.'://'.&Apache::lonnet::hostname($home);
-                        }
-                        unless ($external =~ m{^\Q$prefix/uploaded/$cdom/$cnum/portfolio/syllabus\E}) {
-                            &Apache::lonnet::delenv('course.'.$env{'request.course.id'}.'.uploadedsyllabus');
-                            &Apache::lonnet::put('environment',{uploadedsyllabus => ''},
-                                                 $cdom,$cnum);
-                            undef($uploaded);
-                        }
-                    }
+                    ($uploaded,$minimal,$external) =
+                        &update_syllabus_env($cdom,$cnum,$courseenv,$env{'form.choice'},$uploaded,
+                                             $minimal,$external);
                 } else {
                     $output = '<div class="LC_error">'.
                               &mt('An error occurred storing the external URL: [_1]',$putres).
@@ -1187,12 +1263,9 @@ END
                                                        'portfolio/syllabus/loncapa.html');
         }
         if ($url =~ m{^/uploaded/\Q$cdom\E/\Q$cnum\E.*/[^/]+$}) {
-            my $exturl;
-            my $home=&Apache::lonnet::homeserver($cnum,$cdom);
-            if ($home ne 'no_host') {
-                my $protocol = $Apache::lonnet::protocol{$home};
-                $protocol = 'http' if ($protocol ne 'https');
-                $exturl = $protocol.'://'.&Apache::lonnet::hostname($home).$url;
+            my $exturl = &home_http_host($cdom,$cnum);
+            if ($exturl) {
+                $exturl .= $url;
             }
             my %storehash;
             if ($env{'form.choice'} eq 'minimal') {
@@ -1224,6 +1297,9 @@ END
                     $output .= &return_to_editor($cdom,$cnum);
                     $earlyout = 1;
                 }
+                ($uploaded,$minimal,$external) =
+                    &update_syllabus_env($cdom,$cnum,$courseenv,$env{'form.choice'},$uploaded,
+                                         $minimal,$external);
             } else {
                 $error = 1;
                 $errormsg = $putres;
@@ -1273,6 +1349,88 @@ END
     return ($earlyout,$uploaded,$external,$minimal,$output);
 }
 
+sub update_syllabus_env {
+    my ($cdom,$cnum,$courseenv,$saved,$uploaded,$minimal,$external) = @_;
+    return ($uploaded,$minimal,$external) unless(ref($courseenv) eq 'HASH');
+    my $now = time;
+    my (@envkeys,%storehash);
+    if ($saved eq 'template') {
+        if ($uploaded) {
+            push(@envkeys,'uploaded');
+        }
+        if ($minimal) {
+            push(@envkeys,'minimal');
+        }
+        if ($external) {
+            push(@envkeys,'external');
+        }
+        $storehash{'updatedsyllabus'} = $now;
+        &Apache::lonnet::appenv({'course.'.$env{'request.course.id'}.'.updatedsyllabus' => $now
+});
+
+    } elsif ($saved eq 'url') {
+        my $prefix = &home_http_host($cdom,$cnum);
+        if ($external =~ m{^\Q$prefix/uploaded/$cdom/$cnum/portfolio/syllabus/\E(.+)$}) {
+            my $file = $1;
+            if ($file eq 'loncapa.html') {
+                if ($uploaded) {
+                    push(@envkeys,'uploaded');
+                }
+            } elsif ($minimal) {
+                push(@envkeys,'minimal');
+            }
+        } else {
+            if ($uploaded) {
+                push(@envkeys,'uploaded');
+            }
+            if ($minimal) {
+                push(@envkeys,'minimal');
+            }
+        }
+    } elsif ($saved eq 'file') {
+        if ($minimal) {
+            push(@envkeys,'minimal');
+        }
+    } elsif ($saved eq 'minimal') {
+        if ($uploaded) {
+            push(@envkeys,'uploaded');
+        }
+    }
+    if (@envkeys > 0) {
+        foreach my $item (@envkeys) {
+            my $key = $item.'syllabus';
+            if ($courseenv->{$key}) {
+                &Apache::lonnet::delenv('course.'.$env{'request.course.id'}.'.'.$key);
+                $storehash{$key} = '';
+            }
+            if ($item eq 'uploaded') {
+                undef($uploaded);
+            }
+            if ($item eq 'external') {
+                undef($external);
+            }
+            if ($item eq 'minimal') {
+                undef($minimal);
+            }
+        }
+    }
+    if (keys(%storehash) > 0) {
+        &Apache::lonnet::put('environment',\%storehash,$cdom,$cnum);
+    }
+    return ($uploaded,$minimal,$external);
+}
+
+sub home_http_host {
+    my ($cdom,$cnum) = @_;
+    my $home=&Apache::lonnet::homeserver($cnum,$cdom);
+    if ($home ne 'no_host') {
+        my $protocol = $Apache::lonnet::protocol{$home};
+        $protocol = 'http' if ($protocol ne 'https');
+        return $protocol.'://'.$home;
+    }
+    return;
+}
+
 sub process_upload {
     my ($upload_output,$cnum,$cdom,$allfiles,$codebase) = @_;
     my ($parseaction,$showupload,$mimetype);
@@ -1358,18 +1516,28 @@ sub return_to_editor {
 }
 
 sub editfile_button {
-    my ($url,$context) = @_;
+    my ($url,$context,$editable) = @_;
     my $edittext=&mt('Edit');
     my $deltext=&mt('Delete');
-    return <<"END";
-                <input type="button" value="$edittext" onclick="javascript:gotoeditor('$url');" name="edit_$context" />
-                &nbsp;&nbsp;&nbsp;
-                <input type="button" value="$deltext" onclick="javascript:dodelete('$context');" name="del_$context" />
+    my $output;
+    if ($editable) {
+        $output = '
+                <input type="button" value="'.$edittext.'" onclick="javascript:gotoeditor('."'$url'".');" name="edit_'.$context.'" />
+                &nbsp;&nbsp;&nbsp;';
+    }
+    $output .= '
+                <input type="button" value="'.$deltext.'" onclick="javascript:dodelete('."'$context'".');" name="del_'.$context.'" />
                 <input type="hidden" value="" name="deleteuploaded" />
-END
+    ';
+    return $output;
 }
 
 sub editbutton_js {
+    my %lt = &Apache::lonlocal::texthash(
+               min    => 'Are you sure you want to delete the contents of the syllabus template?',
+               file   => 'Are you sure you want to delete the uploaded syllabus file?',
+               noundo => 'This action cannot be reversed.'
+             );
     return <<ENDJS;
                 <script type="text/javascript">
                 // <![CDATA[
@@ -1378,7 +1546,17 @@ sub editbutton_js {
                   }
                   function dodelete(caller,url) {
                       document.syllabus.deleteuploaded.value=caller;
-                      document.syllabus.submit();
+                      if (caller == 'minimal') {
+                          if (confirm("$lt{'min'}"+"\\n"+"$lt{'noundo'}")) {
+                              document.syllabus.submit();
+                          }
+                      }
+                      if (caller == 'file') {
+                          if (confirm("$lt{'file'}"+"\\n"+"$lt{'noundo'}")) {
+                              document.syllabus.submit();
+                          }
+                      }
+                      return;   
                   }
                 // ]]>
                 </script>