IE errors if you try to use 'return' as a dict key.

lms/templates/courseware/xqa_interface.html

@@ -14,7 +14,7 @@ function sendlog(element_id, edit_link, staff_context){
 			location: staff_context.location,
 			category : staff_context.category,
 			'username' : staff_context.user.username,
-			return : 'query',
+			'return' : 'query',
 			format : 'html',
 			email : staff_context.user.email,
 			tag:$('#' + element_id + '_xqa_tag').val(),