         
         var request:SWFBridgeRequest = SWFBridgeRequest.marshal(event);
             
-        if (!preProcessModalWindowRequest(request, this, getSandboxRoot()))
+        if (!preProcessModalWindowRequest(request, getSandboxRoot()))
             return;
                         
         // Ensure a PopUpManager exists and dispatch the request it is

	}

	/**
	 * Create the requested manager
	 */
	private function initManagerHandler(event:Event):void
	{

     *  A convenience method for determining whether to use the
	 *  explicit or measured height.
	 *
     *  @return A Number that is the <code>explicitHeight</code> if defined,
	 *  or the <code>measuredHeight</code> property if not.
     */
    public function getExplicitOrMeasuredHeight():Number
