--- loncom/interface/lonhtmlcommon.pm	2016/08/10 03:17:15	1.358.2.6
+++ loncom/interface/lonhtmlcommon.pm	2023/10/06 15:24:21	1.358.2.19.2.9
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common html routines
 #
-# $Id: lonhtmlcommon.pm,v 1.358.2.6 2016/08/10 03:17:15 raeburn Exp $
+# $Id: lonhtmlcommon.pm,v 1.358.2.19.2.9 2023/10/06 15:24:21 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -78,7 +78,11 @@ sub java_not_enabled {
 sub coursepreflink {
    my ($text,$category)=@_;
    if (&Apache::lonnet::allowed('opa',$env{'request.course.id'})) {
-      return '<a target="_top" href="'.&HTML::Entities::encode("/adm/courseprefs?phase=display&actions=$category",'<>&"').'"><span class="LC_setting">'.$text.'</span></a>';
+      my $target =' target="_top"';
+      if (($env{'request.deeplink.login'}) && ($env{'request.deeplink.target'} eq '_self')) {
+          $target = '';
+      }
+      return '<a'.$target.' href="'.&HTML::Entities::encode("/adm/courseprefs?phase=display&actions=$category",'<>&"').'"><span class="LC_setting">'.$text.'</span></a>';
    } else {
       return '';
    }
@@ -92,7 +96,7 @@ sub raw_href_to_link {
 
 sub entity_encode {
     my ($text)=@_;
-    return &HTML::Entities::encode($text, '<>&"');
+    return &HTML::Entities::encode($text, '\'<>&"');
 }
 
 sub direct_parm_link {
@@ -101,7 +105,11 @@ sub direct_parm_link {
     $filter=&entity_encode($filter);
     $part=&entity_encode($part);
     if (($symb) && (&Apache::lonnet::allowed('opa')) && ($target ne 'tex')) {
-       return "<a target='_top' href='/adm/parmset?symb=$symb&amp;filter=$filter&amp;part=$part'><span class='LC_setting'>$linktext</span></a>";
+        my $target=' target="_top"';
+        if (($env{'request.deeplink.login'}) && ($env{'request.deeplink.target'} eq '_self')) {
+            $target = '';
+        }
+       return "<a".$target." href='/adm/parmset?symb=$symb&amp;filter=$filter&amp;part=$part'><span class='LC_setting'>$linktext</span></a>";
     } else {
        return $linktext;
     }
@@ -407,7 +415,7 @@ sub textbox {
 ##############################################
 ##############################################
 sub checkbox {
-    my ($name,$checked,$value) = @_;
+    my ($name,$checked,$value,$special) = @_;
     my $Str = '<input type="checkbox" name="'.$name.'" ';
     if (defined($value)) {
         $Str .= 'value="'.$value.'"';
@@ -415,7 +423,7 @@ sub checkbox {
     if ($checked) {
         $Str .= ' checked="checked"';
     }
-    $Str .= ' />';
+    $Str .= $special.' />';
     return $Str;
 }
 
@@ -534,6 +542,8 @@ sub date_setter {
 
     if (! defined($state) || $state ne 'disabled') {
         $state = '';
+    } else {
+        $state = 'disabled="disabled"';
     }
     if (! defined($no_hh_mm_ss)) {
         $no_hh_mm_ss = 0;
@@ -669,7 +679,7 @@ ENDJS
     my $minuteselector = qq{<input type="text" name="$dname\_minute" $special $state value="$min" size="3" />};
     my $secondselector= qq{<input type="text" name="$dname\_second" $special $state value="$sec" size="3" />};
     my $cal_link;
-    if (!$nolink) {
+    unless (($nolink) || ($state eq 'disabled')) {
         $cal_link = qq{<a href="javascript:$dname\_opencalendar()">};
     }
     #
@@ -694,7 +704,7 @@ ENDJS
                       $hourselector,$minuteselector,$secondselector).
                    $tzone;
     }
-    if (!$nolink) {
+    unless (($nolink) || ($state eq 'disabled')) {
         $result .= &mt('[_1]Select Date[_2]',$cal_link,'</a>');
     }
     $result .= "</span>\n<!-- end $dname date setting form -->\n";
@@ -846,13 +856,14 @@ parameter setting wizard.
 ##############################################
 sub pjump_javascript_definition {
     my $Str = <<END;
-    function pjump(type,dis,value,marker,ret,call,hour,min,sec) {
+    function pjump(type,dis,value,marker,ret,call,hour,min,sec,extra) {
         openMyModal("/adm/rat/parameter.html?type="+escape(type)
                  +"&value="+escape(value)+"&marker="+escape(marker)
                  +"&return="+escape(ret)
                  +"&call="+escape(call)+"&name="+escape(dis)
                  +"&defhour="+escape(hour)+"&defmin="+escape(min)
-                 +"&defsec="+escape(sec)+"&modal=1",350,350,'no');
+                 +"&defsec="+escape(sec)+"&extra="+escape(extra)
+                 +"&modal=1",350,350,'no');
     }
 END
     return $Str;
@@ -1007,10 +1018,13 @@ Inputs
 
 =item $number_to_do The total number of items being processed.
 
+=item $preamble Optional HTML to display before the progress bar.
+
 =back
 
 Returns a hash containing the progress state data structure.
-
+If $number_to_do is zero or null, an indeterminate progress bar will
+be used.
 
 =item &Update_PrgWin()
 
@@ -1080,20 +1094,20 @@ Returns: none
 
 # Create progress
 sub Create_PrgWin {
-    my ($r,$number_to_do)=@_;
+    my ($r,$number_to_do,$preamble)=@_;
     my %prog_state;
     $prog_state{'done'}=0;
     $prog_state{'firststart'}=&Time::HiRes::time();
     $prog_state{'laststart'}=&Time::HiRes::time();
     $prog_state{'max'}=$number_to_do;
-    &Apache::loncommon::LCprogressbar($r); 
+    &Apache::loncommon::LCprogressbar($r,$prog_state{'max'},$preamble); 
     return %prog_state;
 }
 
 # update progress
 sub Update_PrgWin {
     my ($r,$prog_state,$displayString)=@_;
-    &Apache::loncommon::LCprogressbarUpdate($r,undef,$displayString);
+    &Apache::loncommon::LCprogressbarUpdate($r,undef,$displayString,$$prog_state{'max'});
     $$prog_state{'laststart'}=&Time::HiRes::time();
 }
 
@@ -1143,7 +1157,7 @@ sub Increment_PrgWin {
     if ($$prog_state{'max'}) {
        $percent=int(100.*$current/$$prog_state{'max'});
     }
-    &Apache::loncommon::LCprogressbarUpdate($r,$percent,$timeinfo);
+    &Apache::loncommon::LCprogressbarUpdate($r,$percent,$timeinfo,$$prog_state{'max'});
     $$prog_state{'laststart'}=&Time::HiRes::time();
 }
 
@@ -1160,7 +1174,7 @@ sub Close_PrgWin {
 sub crumbs {
     my ($uri,$target,$prefix,$form,$skiplast,$onclick)=@_;
 # You cannot crumbnify uploaded or adm resources
-    if ($uri=~/^\/*(uploaded|adm)\//) { return &mt('(Internal Course/Group Content)'); }
+    if ($uri=~/^\/*(uploaded|adm)\//) { return &mt('(Internal Course/Community Content)'); }
     if ($target) {
         $target = ' target="'.
                   &Apache::loncommon::escape_single($target).'"';
@@ -1180,6 +1194,12 @@ sub crumbs {
             } else {
                 $path.='/'; 
             }
+            if ($path eq '/res/') {
+                unless (&Apache::lonnet::allowed('bre',$path)) {
+                    $output.="$dir/";
+                    next;
+                }
+            }
             my $href_path = &HTML::Entities::encode($path,'<>&"');
             &Apache::loncommon::inhibit_menu_check(\$href_path);
             if ($form) {
@@ -1257,9 +1277,9 @@ sub htmlareaheaders {
 ENDEDITOR
 	}
     $s.=(<<ENDJQUERY);
-<script type="text/javascript" src="/adm/jQuery/js/jquery-1.11.3.min.js"></script>
-<script type="text/javascript" src="/adm/jQuery/js/jquery-ui-1.11.4.custom.min.js"></script>
-<link rel="stylesheet" type="text/css" href="/adm/jQuery/css/smoothness/jquery-ui-1.11.4.custom.css" />
+<script type="text/javascript" src="/adm/jQuery/js/jquery-3.2.1.min.js"></script>
+<script type="text/javascript" src="/adm/jQuery/js/jquery-ui-1.12.1.custom.min.js"></script>
+<link rel="stylesheet" type="text/css" href="/adm/jQuery/css/smoothness/jquery-ui-1.12.1.custom.min.css" />
 <script type="text/javascript" src="/adm/jpicker/js/jpicker-1.1.6.min.js" >
 </script>
 <link rel="stylesheet" type="text/css" href="/adm/jpicker/css/jPicker-1.1.6.min.css" />
@@ -1342,6 +1362,41 @@ sub htmlareaselectactive {
     }
     
     function startRichEditor(id) {
+        // fix character entities inside <m>
+        // NOTE: this is not fixing characters inside <parse>
+        // NOTE: < and > inside <chem> should fix automatically because there should not be a letter after <.
+        var ta = document.getElementById(id);
+        var value = ta.value;
+        var in_m = false; // in the m element
+        var in_text = false; // in the text inside the m element
+        var im = -1; // position of <m>
+        var it = -1; // position of the text inside
+        for (var i=0; i<value.length; i++) {
+            if (value.substr(i, 2) == "<m") {
+                // ignore previous <m> if found twice
+                in_m = true;
+                in_text = false;
+                im = i;
+                it = -1;
+            } else if (in_m) {
+                if (!in_text) {
+                    if (value.charAt(i) == ">") {
+                        in_text = true;
+                        it = i+1;
+                    }
+                } else if (value.substr(i, 4) == "</m>") {
+                    in_m = false;
+                    var text = value.substr(it, i-it);
+                    var l1 = text.length;
+                    text = text.replace(/</g, "&lt;");
+                    text = text.replace(/>/g, "&gt;");
+                    var l2 = text.length;
+                    value = value.substr(0, it) + text + "</m>" + value.substr(i+4);
+                    i = i + (l2-l1);
+                }
+            }
+        }
+        ta.value = value;
     	CKEDITOR.replace(id, 
     		{
     			customConfig: "/ckeditor/loncapaconfig.js",
@@ -1353,6 +1408,68 @@ sub htmlareaselectactive {
     
     function destroyRichEditor(id) {
     	CKEDITOR.instances[id].destroy();
+        // replace character entities &lt; and &gt; in <m> and <chem>
+        // and "&amp;fctname(" by "&fctname("
+        // and the quotes inside functions: "&fct(1, &quot;a&quot;)" -> "&fct(1, "a")"
+        var ta = document.getElementById(id);
+        var value = ta.value;
+        var in_element = false; // in the m or chem element
+        var tagname = ""; // m or chem
+        var in_text = false; // in the text inside the element
+        var im = -1; // position of start tag
+        var it = -1; // position of the text inside
+        for (var i=0; i<value.length; i++) {
+            if (value.substr(i, 2) == "<m" || value.substr(i, 5) == "<chem") {
+                // ignore previous tags if found twice
+                in_element = true;
+                if (value.substr(i, 2) == "<m")
+                    tagname = "m";
+                else
+                    tagname = "chem";
+                in_text = false;
+                im = i;
+                it = -1;
+            } else if (in_element) {
+                if (!in_text) {
+                    if (value.charAt(i) == ">") {
+                        in_text = true;
+                        it = i+1;
+                    }
+                } else if (value.substr(i, 3+tagname.length) == "</"+tagname+">") {
+                    in_element = false;
+                    var text = value.substr(it, i-it);
+                    var l1 = text.length;
+                    text = text.replace(/&lt;/g, "<");
+                    text = text.replace(/&gt;/g, ">");
+                    var l2 = text.length;
+                    value = value.substr(0, it) + text + value.substr(i);
+                    i = i + (l2-l1);
+                }
+            }
+        }
+        // fix function names
+        value = value.replace(/&amp;([a-zA-Z_]+)\(/g, "&$1(");
+        // fix quotes in functions
+        var pos_next_fct = value.search(/&[a-zA-Z_]+\(/);
+        var depth = 0;
+        for (var i=0; i<value.length; i++) {
+            if (i == pos_next_fct) {
+                depth++;
+                var sub = value.substring(i+1);
+                var pos2 = sub.search(/&[a-zA-Z_]+\(/);
+                if (pos2 == -1)
+                    pos_next_fct = -1;
+                else
+                    pos_next_fct = i + 1 + pos2;
+            } else if (depth > 0) {
+                if (value.charAt(i) == ")")
+                    depth--;
+                else if (value.substr(i, 6) == "&quot;")
+                    value = value.substr(0, i) + "\"" + value.substr(i+6);
+            }
+        }
+        // replace the text value
+        ta.value = value;
     }
     
     function editorHandler(event) {
@@ -1570,13 +1687,29 @@ sub show_return_link {
     unless ($env{'request.course.id'}) { return 0; }
     if ($env{'request.noversionuri'}=~m{^/priv/} ||
         $env{'request.uri'}=~m{^/priv/}) { return 1; }
-    return if ($env{'request.noversionuri'} eq '/adm/supplemental');
-
-    if (($env{'request.noversionuri'} =~ m{^/adm/(viewclasslist|navmaps)($|\?)})
+    return if (($env{'request.noversionuri'} eq '/adm/supplemental') &&
+               ($env{'form.folder'} ne 'supplemental'));
+    return if (($env{'form.folderpath'} ne '') &&
+               (($env{'request.noversionuri'} =~ m{^/adm/$match_domain/$match_username/aboutme$}) ||
+                ($env{'request.noversionuri'} =~ m{^/public/$match_domain/$match_courseid/syllabus$})));
+    if (($env{'request.noversionuri'} =~ m{^/adm/viewclasslist($|\?)})
         || ($env{'request.noversionuri'} =~ m{^/adm/.*/aboutme($|\?)})) {
 
         return if ($env{'form.register'});
     }
+    if ((($env{'request.symb'} ne '') || ($env{'form.folderpath'} ne '')) &&
+         ($env{'request.noversionuri'} =~m{^/adm/coursedocs/showdoc/uploaded/($match_domain)/($match_courseid)/(docs|supplemental)/})) {
+        my ($cdom,$cnum,$area) =  ($1,$2,$3);
+        if (($env{'course.'.$env{'request.course.id'}.'.domain'} eq $cdom) &&
+            ($env{'course.'.$env{'request.course.id'}.'.num'} eq $cnum)) {
+            if (($env{'request.symb'}) && ($area eq 'docs')) {
+                my ($map,$resid,$url) = &Apache::lonnet::decode_symb($env{'request.symb'});
+                return if ($env{'request.noversionuri'} eq '/adm/coursedocs/showdoc/'.$url);
+            } elsif (($env{'form.folderpath'}) && ($area eq 'supplemental')) {
+                return;
+            }
+        }
+    }
     return (($env{'request.noversionuri'}=~m{^/(res|public)/} &&
              $env{'request.symb'} eq '')
             ||
@@ -1585,7 +1718,7 @@ sub show_return_link {
             (($env{'request.noversionuri'}=~/^\/adm\//) &&
              ($env{'request.noversionuri'}!~/^\/adm\/wrapper\//) &&
              ($env{'request.noversionuri'}!~
-              m{^/adm/.*/(smppg|bulletinboard)($|\?)})
+              m{^/adm/.*/(smppg|bulletinboard|ext\.tool)($|\?)})
            ));
 }
 
@@ -1645,6 +1778,48 @@ clientTime = (new Date()).getTime();
 END
 }
 
+##
+# Client-side javascript to convert any dashes in text pasted
+# into textbox(es) for numericalresponse item(s) to a standard
+# minus, i.e., - . Calls to dash_to_minus_js() in end_problem()
+# and in loncommon::endbodytag() for a .page (arg: dashjs => 1)
+#
+# Will apply to any input tag with class: LC_numresponse_text.
+# Currently set in start_textline for numericalresponse items.
+#
+
+sub dash_to_minus_js {
+    return <<'ENDJS';
+
+<script type="text/javascript">
+//<![CDATA[
+//<!-- BEGIN LON-CAPA Internal
+document.addEventListener("DOMContentLoaded", (event) => {
+    const numresp = document.querySelectorAll("input.LC_numresponse_text");
+    if (numresp.length > 0) {
+        numresp.forEach((el) => {
+            el.addEventListener("paste", (e) => {
+                e.preventDefault();
+                e.stopPropagation();
+                let p = (e.clipboardData || window.clipboardData).getData("text");
+                p.toString();
+                p = p.replace(/\p{Dash}/gu, '-');
+                putInText(p);
+            });
+        });
+    }
+    const putInText = (newText, el = document.activeElement) => {
+        const [start, end] = [el.selectionStart, el.selectionEnd];
+        el.setRangeText(newText, start, end, 'end');
+    }
+});
+// END LON-CAPA Internal -->
+//]]>
+</script>
+
+ENDJS
+}
+
 ############################################################
 ############################################################
 
@@ -1672,6 +1847,7 @@ Inputs: $component (the text on the righ
            row, using loncommon::help_open_topic() to generate the link.
         $topic_help_text (text to include in the link in the optional help item 
            on the right side of the breadcrumbs row.
+        $links_target optionally includes the target (_top, _parent or _self)
 
 Returns a string containing breadcrumbs for the current page.
 
@@ -1700,7 +1876,7 @@ returns: nothing
     
     sub breadcrumbs {
         my ($component,$component_help,$menulink,$helplink,$css_class,$no_mt, 
-            $CourseBreadcrumbs,$topic_help,$topic_help_text) = @_;
+            $CourseBreadcrumbs,$topic_help,$topic_help_text,$links_target) = @_;
         #
         $css_class ||= 'LC_breadcrumbs';
 
@@ -1716,6 +1892,16 @@ returns: nothing
         # The first one should be the course or a menu link
         if (!defined($menulink)) { $menulink=1; }
         if ($menulink) {
+            if ($env{'request.course.id'}) {
+                my ($menucoll,$deeplinkmenu,$menuref) = &Apache::loncommon::menucoll_in_effect();
+                if (($menucoll) && (ref($menuref) eq 'HASH')) {
+                    if ($menuref->{'main'} eq 'n') {
+                       undef($menulink);
+                    }
+                }
+            }
+        }
+        if ($menulink) {
             my $description = 'Menu';
             my $no_mt_descr = 0;
             if ((exists($env{'request.course.id'})) && 
@@ -1725,7 +1911,7 @@ returns: nothing
                     $env{'course.'.$env{'request.course.id'}.'.description'};
                 $no_mt_descr = 1;
                 if ($env{'request.noversionuri'} =~ 
-                    m{^/public/($match_domain)/($match_courseid)/syllabus$}) {
+                    m{^/?public/($match_domain)/($match_courseid)/syllabus$}) {
                     unless (($env{'course.'.$env{'request.course.id'}.'.domain'} eq $1) &&
                             ($env{'course.'.$env{'request.course.id'}.'.num'} eq $2)) {
                         $description = 'Menu';
@@ -1733,9 +1919,15 @@ returns: nothing
                     }
                 }
             }
+            my $target = '_top';
+            if ($links_target) {
+                $target = $links_target;
+            } elsif (($env{'request.deeplink.login'}) && ($env{'request.deeplink.target'} eq '_self')) {
+                $target = '';
+            }
             $menulink =  {  href   =>'/adm/menu',
                             title  =>'Go to main menu',
-                            target =>'_top',
+                            target =>$target,
                             text   =>$description,
                             no_mt  =>$no_mt_descr, };
             if($last) {
@@ -1753,8 +1945,8 @@ returns: nothing
                             title => &mt('Back to most recent content resource'),
                             class => 'LC_menubuttons_link',
                           };
-            if ($env{'request.noversionuri'} eq '/adm/searchcat') {
-                $hashref->{'target'} = '_top'; 
+            if ($links_target) {
+                $hashref->{'target'} = $links_target;
             }
             $links=&htmltag( 'a','<img src="/res/adm/pages/tolastloc.png" alt="'.$alttext.'" class="LC_icon" />',
                              $hashref);
@@ -1805,11 +1997,12 @@ returns: nothing
         if ($faq ne '' || $component_help ne '' || $bug ne '') {
             $icons .= &Apache::loncommon::help_open_menu($component,
                                                          $component_help,
-                                                         $faq,$bug);
+                                                         $faq,$bug,'','','','',
+                                                         $links_target);
         }
         if ($topic_help && $topic_help_text) {
            $icons .= ' '.&Apache::loncommon::help_open_topic($topic_help,&mt($topic_help_text),'',
-                                                             undef,600);
+                                                             undef,600,'',$links_target);
         }
         #
 
@@ -1987,7 +2180,7 @@ returns: nothing
 } # End of scope for @Crumbs
 
 sub docs_breadcrumbs {
-    my ($allowed,$crstype,$contenteditor,$title,$precleared)=@_;
+    my ($allowed,$crstype,$contenteditor,$title,$precleared,$checklinkprot)=@_;
     my ($folderpath,@folders,$supplementalflag);
     @folders = split('&',$env{'form.folderpath'});
     if ($env{'form.folderpath'} =~ /^supplemental/) {
@@ -2002,19 +2195,21 @@ sub docs_breadcrumbs {
         my $foldername=shift(@folders);
         if ($folderpath) {$folderpath.='&';}
         $folderpath.=$folder.'&'.$foldername;
-        my $url;
+        my $url = $env{'request.use_absolute'};
         if ($allowed) {
-            $url = '/adm/coursedocs?folderpath=';
+            $url .= '/adm/coursedocs?folderpath=';
         } else {
-            $url = '/adm/supplemental?folderpath=';
+            $url .= '/adm/supplemental?folderpath=';
         }
         $url .= &escape($folderpath);
         my $name=&unescape($foldername);
 # each of randompick number, hidden, encrypted, random order, is_page 
 # are appended with ":"s to the foldername
         $name=~s/\:(\d*)\:(\w*)\:(\w*):(\d*)\:?(\d*)$//;
-        unless ($supplementalflag) {
-            if ($contenteditor) { 
+        if ($contenteditor) {
+            if ($supplementalflag) {
+                if ($2) { $ishidden=1; }
+            } else {
                 if ($1 ne '') {
                     $randompick=$1;
                 } else {
@@ -2055,9 +2250,17 @@ sub docs_breadcrumbs {
             $plain=~s/\&gt\;\s*$//;
         }
         my $menulink = 0;
-        if (!$allowed && !$contenteditor) {
+        if (!$allowed && !$contenteditor && !$supplementalflag) {
             $menulink = 1;
         }
+        if ($checklinkprot) {
+            if ($env{'request.deeplink.login'}) {
+                my $linkprotout = &Apache::lonmenu::linkprot_exit();
+                if ($linkprotout) {
+                    &Apache::lonhtmlcommon::add_breadcrumb_tool('tools',$linkprotout);
+                }
+            }
+        }
         return (&breadcrumbs(undef,undef,$menulink,'nohelp',undef,undef,
                              $contenteditor),
                              $randompick,$ishidden,$isencrypted,$plain,
@@ -2431,9 +2634,9 @@ sub course_custom_roles {
 
 
 sub resource_info_box {
-   my ($symb,$onlyfolderflag,$stuvcurrent,$stuvdisp)=@_;
+   my ($symb,$onlyfolderflag,$stuvcurrent,$stuvdisp,$divforres)=@_;
    my $return='';
-   if ($stuvcurrent ne '') {
+   if (($stuvcurrent ne '') || ($divforres)) {
        $return = '<div class="LC_left_float">';
    }
    if ($symb) {
@@ -2462,7 +2665,7 @@ sub resource_info_box {
     } else {
        $return='<p><span class="LC_error">'.&mt('No context provided.').'</span></p>';
     }
-    if ($stuvcurrent ne '') {
+    if (($stuvcurrent ne '') || ($divforres)) {
         $return .= '</div>';
     }
     return $return;
@@ -3193,12 +3396,18 @@ PARAMSONE
         if (itemid != null) {
             itemh = itemid.offsetHeight;
         }
-        var primaryheight = document.getElementById('LC_nav_bar').offsetHeight;
-        var secondaryheight;
+        var primaryheight = 0;
+        if (document.getElementById('LC_nav_bar') != null) {
+            primaryheight = document.getElementById('LC_nav_bar').offsetHeight;
+        }
+        var secondaryheight = 0;
         if (document.getElementById('LC_secondary_menu') != null) { 
             secondaryheight = document.getElementById('LC_secondary_menu').offsetHeight;
         }
-        var crumbsheight = document.getElementById('LC_breadcrumbs').offsetHeight;
+        var crumbsheight = 0;
+        if (document.getElementById('LC_breadcrumbs') != null) {
+            crumbsheight = document.getElementById('LC_breadcrumbs').offsetHeight;
+        }
         var dccidheight = 0;
         if (document.getElementById('dccid') != null) {
             dccidheight = document.getElementById('dccid').offsetHeight;
@@ -3271,20 +3480,37 @@ THIRD
 sub javascript_jumpto_resource {
     my $confirm_switch = &mt("Editing requires switching to the resource's home server.")."\n".
                          &mt('Switch server?');
+    my $confirm_new_tab = &mt("Editing requires using the resource's home server.")."\n".
+                          &mt('Open a new browser tab?');
     &js_escape(\$confirm_switch);
+    &js_escape(\$confirm_new_tab);
     return (<<ENDUTILITY)
 
 function go(url) {
    if (url!='' && url!= null) {
        currentURL = null;
        currentSymb= null;
-       window.location.href=url;
+       var lcHostname = setLCHost();
+       if (lcHostname!='' && lcHostname!= null) {
+           var RegExp = /^https?\:/;
+           if (RegExp.test(url)) {
+               window.location.href=url;
+           } else {
+               window.location.href=lcHostname+url;
+           }
+       } else {
+           window.location.href=url;
+       }
    }
 }
 
-function need_switchserver(url) {
+function need_switchserver(url,target) {
     if (url!='' && url!= null) {
-        if (confirm("$confirm_switch")) {
+        if (target == '_blank') {
+            if (confirm("$confirm_new_tab")) {
+                window.open(url,target);
+            }
+        } else if (confirm("$confirm_switch")) {
             go(url);
         }
     }
@@ -3296,15 +3522,31 @@ ENDUTILITY
 }
 
 sub jump_to_editres {
-    my ($cfile,$home,$switchserver,$forceedit,$forcereg,$symb,$folderpath,
-        $title,$idx,$suppurl,$todocs) = @_;
-    my $jscall;
+    my ($cfile,$home,$switchserver,$forceedit,$forcereg,$symb,$shownsymb,
+        $folderpath,$title,$hostname,$idx,$suppurl,$todocs,$suppanchor) = @_;
+    my ($jscall,$anchor,$usehttp,$usehttps,$is_ext,$target);
     if ($switchserver) {
         if ($home) {
+            my $resedit;
+            if ($cfile =~ m{^/priv/($match_domain)/($match_username)/}) {
+                my ($audom,$auname) = ($1,$2);
+                unless (&Apache::lonnet::is_course($audom,$auname)) {
+                    if (($symb ne '') && ($env{'request.course.id'}) &&
+                        (&Apache::lonnet::allowed('mdc',$env{'request.course.id'}))) {
+                        unless (&Apache::lonnet::can_switchserver($env{'user.domain'},$home)) {
+                            $target = '_blank';
+                            $resedit = 1;
+                        }
+                    }
+                }
+            }
             $cfile = '/adm/switchserver?otherserver='.$home.'&amp;role='.
                      &HTML::Entities::encode($env{'request.role'},'"<>&');
-            if ($symb) {
-                $cfile .= '&amp;symb='.&HTML::Entities::encode($symb,'"<>&');
+            if ($shownsymb) {
+                $cfile .= '&amp;symb='.&HTML::Entities::encode($shownsymb,'"<>&');
+                if ($resedit) {
+                    $cfile .= '&amp;edit=1';
+                }
             } elsif ($folderpath) {
                 $cfile .= '&amp;folderpath='.&HTML::Entities::encode($folderpath,'"<>&');
             }
@@ -3314,11 +3556,48 @@ sub jump_to_editres {
             if ($forcereg) {
                 $cfile .= '&amp;register=1';
             }
-            $jscall = "need_switchserver('".&Apache::loncommon::escape_single($cfile)."');";
+            $jscall = "need_switchserver('".&Apache::loncommon::escape_single($cfile)."','$target')";
         }
     } else {
         unless ($cfile =~ m{^/priv/}) {
+            if ($cfile =~ m{^(/adm/wrapper/ext/([^#]+))(?:|#([^#]+))$}) {
+                $cfile = $1;
+                my $extlink = $2;
+                $anchor = $3;
+                $is_ext = 1;
+                if (($extlink !~ /^https:/) && ($ENV{'SERVER_PORT'} == 443)) {
+                    unless ((&Apache::lonnet::uses_sts()) || (&Apache::lonnet::waf_allssl($hostname))) {
+                        $usehttp = 1;
+                    }
+                } elsif ($env{'request.use_absolute'}) {
+                    if ($env{'request.use_absolute'} =~ m{^https://}) {
+                        $usehttps = 1;
+                    }
+                }
+            } elsif ($cfile =~ m{^/?public/($match_domain)/($match_courseid)/syllabus}) {
+                if ($ENV{'SERVER_PORT'} == 443) {
+                    my ($cdom,$cnum) = ($1,$2);
+                    if (($env{'request.course.id'}) &&
+                        ($env{'course.'.$env{'request.course.id'}.'.num'} eq $cnum) &&
+                        ($env{'course.'.$env{'request.course.id'}.'.domain'} eq $cdom)) {
+                        if ($env{'course.'.$env{'request.course.id'}.'.externalsyllabus'} =~ m{^http://}) {
+                            unless ((&Apache::lonnet::uses_sts()) || (&Apache::lonnet::waf_allssl($hostname))) {
+                                $usehttp = 1;
+                            }
+                        }
+                    }
+                } elsif ($env{'request.use_absolute'}) {
+                    if ($env{'request.use_absolute'} =~ m{^https://}) {
+                        $usehttps = 1;
+                    }
+                }
+            }
             if ($symb) {
+                if ($anchor ne '') {
+                    if ($symb =~ m{^([^#]+)\Q#$anchor\E$}) {
+                        $symb = $1.&escape(&escape('#')).$anchor;
+                    }
+                }
                 $cfile .= (($cfile=~/\?/)?'&amp;':'?')."symb=$symb";
             } elsif ($folderpath) {
                 $cfile .= (($cfile=~/\?/)?'&amp;':'?').
@@ -3337,14 +3616,31 @@ sub jump_to_editres {
             }
             if ($forceedit) {
                 $cfile .= (($cfile=~/\?/)?'&amp;':'?').'forceedit=1';
+                if ($usehttps) {
+                    $cfile = $env{'request.use_absolute'}.(($cfile =~ /^\//)? '':'/').$cfile;
+                }
+            } elsif ($usehttp) {
+                if ($hostname ne '') {
+                    $cfile = 'http://'.$hostname.(($cfile =~ /^\//)? '':'/').$cfile;
+                }
+                $cfile .= (($cfile=~/\?/)?'&amp;':'?').'usehttp=1';
+            } elsif ($usehttps) {
+                $cfile = $env{'request.use_absolute'}.(($cfile =~ /^\//)? '':'/').$cfile;
             }
             if ($forcereg) {
                 $cfile .= (($cfile=~/\?/)?'&amp;':'?').'register=1';
             }
             if ($todocs) {
-               $cfile .= (($cfile=~/\?/)?'&amp;':'?').'todocs=1';
+                $cfile .= (($cfile=~/\?/)?'&amp;':'?').'todocs=1';
+            }
+            if ($suppanchor ne '') {
+                $cfile .= (($cfile=~/\?/)?'&amp;':'?').'anchor='.
+                          &HTML::Entities::encode($suppanchor,'"<>&');
             }
         }
+        if ($anchor ne '') {
+            $cfile .= '#'.$anchor;
+        }
         $jscall = "go('".&Apache::loncommon::escape_single($cfile)."')";
     }
     return $jscall;
@@ -3356,15 +3652,18 @@ sub jump_to_editres {
 # javascript_valid_email
 #
 # Generates javascript to validate an e-mail address.
-# Returns a javascript function which accetps a form field as argumnent, and
+# Returns a javascript function which accepts a form field as argument, and
 # returns false if field.value does not satisfy two regular expression matches
 # for a valid e-mail address.  Backwards compatible with old browsers without
 # support for javascript RegExp (just checks for @ in field.value in this case). 
 
 sub javascript_valid_email {
     my $scripttag .= <<'END';
-function validmail(field) {
+function validmail(field,suffix) {
     var str = field.value;
+    if (suffix != '' && suffix != undefined) {
+        str += suffix;
+    }
     if (window.RegExp) {
         var reg1str = "(@.*@)|(\\.\\.)|(@\\.)|(\\.@)|(^\\.)";
         var reg2str = "^.+\\@(\\[?)[a-zA-Z0-9\\-\\.]+\\.([a-zA-Z]{2,3}|[0-9]{1,3})(\\]?)$"; //"