      *  @private
      *  Storage for the screen property.
      */
-    private var _screen:Rectangle;
+    mx_internal var _screen:Rectangle;
 
     /**
      *  @inheritDoc

        addEventListener(Event.ADDED, docFrameHandler);
    }
    
	private var topLevel:Boolean = true;
	
	private var initialized:Boolean = false;
	

            }
        }
        
		c = Singleton.getClass("mx.managers::IActiveWindowManager");
		if (c)
		{
            registerImplementation("mx.managers::IActiveWindowManager", new c(this));
        }

        // depends on having IActiveWindowManager installed first
		c = Singleton.getClass("mx.managers::IMarshalSystemManager");
		if (c)
		{
            registerImplementation("mx.managers::IMarshalSystemManager", new c(this));
        }

    //  installCompiledResourceBundles();

        initializeTopLevelWindow(null);
