--- loncom/interface/lonnavmaps.pm	2020/01/16 22:00:10	1.509.2.11.2.1
+++ loncom/interface/lonnavmaps.pm	2020/03/05 23:12:23	1.509.2.12
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Navigate Maps Handler
 #
-# $Id: lonnavmaps.pm,v 1.509.2.11.2.1 2020/01/16 22:00:10 raeburn Exp $
+# $Id: lonnavmaps.pm,v 1.509.2.12 2020/03/05 23:12:23 raeburn Exp $
 
 #
 # Copyright Michigan State University Board of Trustees
@@ -577,7 +577,11 @@ sub getLinkForResource {
 	    my $anchor;
 	    if ($res->is_page()) {
 		foreach my $item (@$stack) { if (defined($item)) { $anchor = $item; }  }
-		$anchor=&escape($anchor->shown_symb());
+		if ($anchor->encrypted() && !&advancedUser()) {
+		    $anchor='LC_'.$anchor->id();
+		} else {
+		    $anchor=&escape($anchor->shown_symb());
+		}
 		return ($res->link(),$res->shown_symb(),$anchor);
 	    }
             # in case folder was skipped over as "only sequence"
@@ -1937,7 +1941,7 @@ END
                     $currentJumpDelta) {
                     # Jam the anchor after the <td> tag;
                     # necessary for valid HTML (which Mozilla requires)
-                    $colHTML =~ s/\>/\>\<a name="curloc" \/\>/;
+                    $colHTML =~ s/\>/\>\<a name="curloc" \>\<\/a\>/;
                     $displayedJumpMarker = 1;
                 }
                 $result .= $colHTML . "\n";
@@ -4814,12 +4818,11 @@ sub duedate {
     my $date;
     my @interval=$self->parmval("interval", $part);
     my $due_date=$self->parmval("duedate", $part);
-    if ($interval[0] =~ /^(\d+)/) {
-        my $timelimit = $1;
-        my $first_access=&Apache::lonnet::get_first_access($interval[1],
-                                                           $self->{SYMB});
+    if ($interval[0] =~ /\d+/) {
+       my $first_access=&Apache::lonnet::get_first_access($interval[1],
+                                                          $self->{SYMB});
 	if (defined($first_access)) {
-            my $interval = $first_access+$timelimit;
+           my $interval = $first_access+$interval[0];
 	    $date = (!$due_date || $interval < $due_date) ? $interval 
                                                           : $due_date;
 	} else {