Index: lams_central/web/includes/javascript/pedagogicalPlanner.js
===================================================================
RCS file: /usr/local/cvsroot/lams_central/web/includes/javascript/pedagogicalPlanner.js,v
diff -u -r1.28 -r1.29
--- lams_central/web/includes/javascript/pedagogicalPlanner.js	21 Aug 2011 07:02:53 -0000	1.28
+++ lams_central/web/includes/javascript/pedagogicalPlanner.js	22 Sep 2011 14:25:07 -0000	1.29
@@ -324,7 +324,7 @@
   function expandActivity(id){
 	 var activity = $('#activity'+id);
 	 var currentHeight = activity.height();
-	 var targetHeight =  activity[0].contentDocument.height + 150;
+	 var targetHeight =  activity.contents().find("html").height() + 10;
 	 var expanded = 'true';
 	 if (initialActivityHeight == null){
 		 initialActivityHeight = currentHeight;