--- loncom/interface/lonnavdisplay.pm	2012/01/02 23:10:58	1.22
+++ loncom/interface/lonnavdisplay.pm	2014/05/06 00:59:00	1.22.4.4
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Navigate Maps Handler
 #
-# $Id: lonnavdisplay.pm,v 1.22 2012/01/02 23:10:58 www Exp $
+# $Id: lonnavdisplay.pm,v 1.22.4.4 2014/05/06 00:59:00 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -38,7 +38,7 @@ use Apache::lonhtmlcommon();
 use Apache::lonnet;
 use Apache::lonlocal;
 use Apache::londocs();
-use Time::HiRes qw( gettimeofday tv_interval );
+#use Time::HiRes qw( gettimeofday tv_interval );
 
 sub handler {
     my $r = shift;
@@ -246,7 +246,7 @@ sub real_handler {
                     <select name="sort" onchange="document.sortForm.submit()">
                        <option value="default"'.$selected{'default'}.'>'.&mt('Default').'</option>
                        <option value="title"'.$selected{'title'}.'>'.&mt('Title').'</option>
-                       <option value="duedate"'.$selected{'duedate'}.'>'.&mt('Duedate').'</option>
+                       <option value="duedate"'.$selected{'duedate'}.'>'.&mt('Due Date').'</option>
                        <option value="discussion"'.$selected{'discussion'}.'>'.&mt('Has New Discussion').'</option>
                     </select>
                     <input type="hidden" name="register" value="'.$env{'form.register'}.'" />
@@ -293,9 +293,17 @@ sub startContentScreen {
 
     $r->print("\n".'<ul class="LC_TabContentBigger" id="mainnav">'."\n");
     $r->print('<li'.(($mode eq 'navmaps')?' class="active"':'').'><a href="/adm/navmaps"><b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'.&mt('Main Content').'&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</b></a></li>'."\n");
-    $r->print('<li '.(($mode eq 'supplemental')?' class="active"':'').'><a href="/adm/supplemental"><b>'.&mt('Supplemental Content').'</b></a></li>');
+    my $allowed = &Apache::lonnet::allowed('mdc',$env{'request.course.id'});
+    my ($suppcount,$errors);
+    unless ($allowed) {
+        my $cnum = $env{'course.'.$env{'request.course.id'}.'.num'};
+        my $cdom = $env{'course.'.$env{'request.course.id'}.'.domain'};
+        ($suppcount,$errors) = &Apache::lonnet::get_numsuppfiles($cnum,$cdom);
+    }
+    if ($allowed || $suppcount) {
+        $r->print('<li '.(($mode eq 'supplemental')?' class="active"':'').'><a href="/adm/supplemental"><b>'.&mt('Supplemental Content').'</b></a></li>');
+    }
     $r->print('<li'.(($mode eq 'coursesearch')?' class="active"':'').'><a href="/adm/searchcourse"><b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'.&mt('Content Search').'&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</b></a></li>'."\n");
-    $r->print('<li'.(($mode eq 'courseindex')?' class="active"':'').'><a href="/adm/indexcourse"><b>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;'.&mt('Content Index').'&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</b></a></li>'."\n");
     $r->print("\n".'</ul>'."\n");
     $r->print('<div class="LC_Box" style="clear:both;margin:0;"><div id="maincoursedoc" style="margin:0 0;padding:0 0;"><div class="LC_ContentBox" id="mainCourseDocuments" style="display: block;">');
 }