--- loncom/homework/edit.pm	2012/02/13 11:23:11	1.140
+++ loncom/homework/edit.pm	2012/08/07 14:54:10	1.142
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA 
 # edit mode helpers
 #
-# $Id: edit.pm,v 1.140 2012/02/13 11:23:11 foxr Exp $
+# $Id: edit.pm,v 1.142 2012/08/07 14:54:10 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -427,6 +427,12 @@ sub insert_plotvector {
 <plotvector />';
 }
 
+sub insert_drawvectorsum {
+    return '
+<drawvectorsum />';
+}
+
+
 sub insert_functionplotrule {
     return '
 <functionplotrule />';
@@ -738,6 +744,7 @@ sub js_change_detection {
     my $unsaved=&mt("There are unsaved changes");
     return (<<SCRIPT);
 <script type="text/javascript">
+// <![CDATA[
 var clean = true;
 var is_submit = false;
 var still_ask = false;
@@ -756,6 +763,7 @@ function unClean() {
      clean=false;
 }
 window.onbeforeunload = compareForm;
+// ]]>
 </script>
 SCRIPT
 }