--- loncom/interface/lonhtmlcommon.pm	2010/08/08 02:00:38	1.282
+++ loncom/interface/lonhtmlcommon.pm	2010/10/04 14:34:46	1.284
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # a pile of common html routines
 #
-# $Id: lonhtmlcommon.pm,v 1.282 2010/08/08 02:00:38 raeburn Exp $
+# $Id: lonhtmlcommon.pm,v 1.284 2010/10/04 14:34:46 www Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -62,6 +62,11 @@ use Apache::lonlocal;
 use Apache::lonnet;
 use LONCAPA;
 
+sub java_not_enabled {
+   return "\n".'<span class="LC_error">'.
+          &mt('The required Java applet could not be started. Please make sure to have Java installed and active in your browser.').
+          "</span>\n";
+}
 
 sub coursepreflink {
    my ($text,$category)=@_;
@@ -2475,11 +2480,15 @@ sub generate_menu {
             # create the markup for the current $link and push it into @links.
             # each entry consists of an image and a text optionally followed 
             # by a help link.
+            my $src;
+            if ($$link{icon} ne '') {
+                $src = '/res/adm/pages/'.$$link{icon};
+            }
             push(@links,$li->(
                         $a->(
                             $img->("", {
                                 class => "LC_noBorder LC_middle",
-                                src   => "/res/adm/pages/$$link{icon}",
+                                src   => $src,
                                 alt   => mt(defined($$link{alttext}) ?
                                 $$link{alttext} : $$link{linktext})
                             }), {