--- loncom/interface/lonnavmaps.pm	2009/10/26 10:16:56	1.437
+++ loncom/interface/lonnavmaps.pm	2010/01/07 12:42:43	1.442
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Navigate Maps Handler
 #
-# $Id: lonnavmaps.pm,v 1.437 2009/10/26 10:16:56 foxr Exp $
+# $Id: lonnavmaps.pm,v 1.442 2010/01/07 12:42:43 wenzelju Exp $
 
 #
 # Copyright Michigan State University Board of Trustees
@@ -49,7 +49,7 @@ described at http://www.lon-capa.org.
 
 =head1 OVERVIEW
 
-X<lonnavmaps, overview When a user enters a course, LON-CAPA examines the
+X<lonnavmaps, overview> When a user enters a course, LON-CAPA examines the
 course structure and caches it in what is often referred to as the
 "big hash" X<big hash>. You can see it if you are logged into
 LON-CAPA, in a course, by going to /adm/test. (You may need to
@@ -505,10 +505,13 @@ my %statusIconMap =
      $resObj->ERROR        => ''
      );
 
-my %iconAltTags = 
-    ( 'navmap.correct.gif' => 'Correct',
-      'navmap.wrong.gif'   => 'Incorrect',
-      'navmap.open.gif'    => 'Open' );
+my %iconAltTags =   #texthash does not work here
+    ( 'navmap.correct.gif'  => 'Correct',
+      'navmap.wrong.gif'    => 'Incorrect',
+      'navmap.open.gif'     => 'Open',
+      'navmap.partial.gif'  => 'Partially Correct',
+      'navmap.ellipsis.gif' => 'Attempted',
+     );
 
 # Defines a status->color mapping, null string means don't color
 my %colormap = 
@@ -1034,7 +1037,7 @@ sub render_communication_status {
     my $location=&Apache::loncommon::lonhttpdurl("/adm/lonMisc");
     if ($resource->hasDiscussion()) {
         $discussionHTML = $linkopen .
-            '<img alt="'.&mt('New Discussion').'" src="'.$location.'/chat.gif" />' .
+            '<img alt="'.&mt('New Discussion').'" src="'.$location.'/chat.gif" title="'.&mt('New Discussion').'"/>' .
             $linkclose;
     }
     
@@ -1044,7 +1047,7 @@ sub render_communication_status {
             if ($msgid) {
                 $feedbackHTML .= '&nbsp;<a '.$target.' href="/adm/email?display='
                     . &escape($msgid) . '">'
-                    . '<img alt="'.&mt('New E-mail').'" src="'.$location.'/feedback.gif" /></a>';
+                    . '<img alt="'.&mt('New E-mail').'" src="'.$location.'/feedback.gif" title="'.&mt('New E-mail').'"/></a>';
             }
         }
     }
@@ -1058,7 +1061,7 @@ sub render_communication_status {
                 $errorcount++;
                 $errorHTML .= '&nbsp;<a '.$target.' href="/adm/email?display='
                     . &escape($msgid) . '">'
-                    . '<img alt="'.&mt('New Error').'" src="'.$location.'/bomb.gif" /></a>';
+                    . '<img alt="'.&mt('New Error').'" src="'.$location.'/bomb.gif" title="'.&mt('New Error').'"/></a>';
             }
         }
     }
@@ -1091,7 +1094,7 @@ sub render_quick_status {
         if ($icon) {
 	    my $location=
 		&Apache::loncommon::lonhttpdurl("/adm/lonIcons/$icon");
-            $result .= "$linkopen<img src='$location' alt='$alt' />$linkclose";
+		$result .= $linkopen.'<img src="'.$location.'" alt="'.&mt($alt).'" title="'.&mt($alt).'" />'.$linkclose;            
         } else {
             $result .= "&nbsp;";
         }
@@ -1525,7 +1528,6 @@ END
         ( $res->NETWORK_FAILURE    => 1,
           $res->NOTHING_SET        => 1,
           $res->CORRECT            => 1 );
-    my @backgroundColors = ("LC_trEven", "LC_trOdd");
 
     # Shared variables
     $args->{'counter'} = 0; # counts the rows
@@ -1760,7 +1762,6 @@ END
         # show them.
         foreach my $part (@parts) {
             $rownum ++;
-            my $backgroundColor = $backgroundColors[$rownum % scalar(@backgroundColors)];
             
             $result .= &Apache::loncommon::start_data_table_row();
 
@@ -3531,7 +3532,11 @@ sub navHash {
     my $self = shift;
     my $param = shift;
     my $id = shift;
-    return $self->{NAV_MAP}->navhash($param . ($id?$self->{ID}:""));
+    my $arg = $param . ($id?$self->{ID}:"");
+    if (defined($arg)) {
+        return $self->{NAV_MAP}->navhash($arg);
+    }
+    return;
 }
 
 =pod