     {
         if (_openButton === value)
             return;
-		
+        
         removeOpenTriggers();
             
         _openButton = value;

            
            addCloseOnResizeTrigger();
            
			if (openButton && openButton.systemManager)
            	openButton.systemManager.getSandboxRoot().addEventListener(MouseEvent.MOUSE_WHEEL, systemManager_mouseWheelHandler);
        }
    }
    

    private var _closeOnResize:Boolean = true;
    
    /**
     *  When <code>true</code>, resizing the system manager 
     *  closes the drop down.
     *  For mobile applications, you can set this property
     *  to <code>false</code> so that the drop down stays open when the 
     *  page orientation changes.
     * 
     *  @default true
     *  
