Index: branches/5.2.x/core/ckeditor/plugins/wsc/dialogs/ciframe.html
===================================================================
diff -u -N -r15316 -r16404
--- branches/5.2.x/core/ckeditor/plugins/wsc/dialogs/ciframe.html	(.../ciframe.html)	(revision 15316)
+++ branches/5.2.x/core/ckeditor/plugins/wsc/dialogs/ciframe.html	(.../ciframe.html)	(revision 16404)
@@ -38,9 +38,26 @@
 	catch (e) {}
 }
 
+function OnMessage (event) {
+	        var message = event.data;
+	        var destination = window.parent.parent;
+	        destination.XDTMaster.read( [ 'end', message, 'fpm' ] ) ;
+}
+
+function listenPostMessage() {
+    if (window.addEventListener) { // all browsers except IE before version 9
+            window.addEventListener ("message", OnMessage, false);
+    }else {
+            if (window.attachEvent) { // IE before version 9
+                        window.attachEvent("onmessage", OnMessage);
+                }
+        }
+}
+
 function onLoad()
 {
 	interval = window.setInterval( sendData2Master, 100 );
+	listenPostMessage();
 }
 
 </script>