         
         if (systemManagerParent)
             systemManagerParent.addEventListener(Event.RESIZE, systemManager_resizeHandler);
-            
-        // Detect stage orientation change and set flag
-        if (stage)
-	    stage.addEventListener(StageOrientationEvent.ORIENTATION_CHANGE, stage_orientationChangeHandler);
     }
     
     /**

        // reset state
        invalidatePositionFlag = false;
        arrowDirectionAdjusted = false;
        stageOrientationChangedFlag = false;

        // Add to PopUpManager, calls updatePopUpPosition(), and change state
        super.open(owner, modal);

        
        if (systemManagerParent)
            systemManagerParent.removeEventListener(Event.RESIZE, systemManager_resizeHandler);
        
        super.close(commit, data);
    }
