 {
 import flash.events.Event;
 
-import mx.core.Window;
+import mx.core.IWindow;
 
 [ExcludeClass]
 

     *  @playerversion AIR 1.1
     *  @productversion Flex 3
     */
    public var window:Window;

    //--------------------------------------------------------------------------
    //

     *  @productversion Flex 3
     */
    public function WindowExistenceEvent(type:String, bubbles:Boolean = false,
                                cancelable:Boolean = false, window:IWindow = null)
    {
        super(type, bubbles, cancelable);

