未调用事件侦听器

我该如何解决我的问题？

当我单击按钮时，我会加载所有图像和图像按钮，但是此后，当我尝试单击关闭按钮（image4）时，事件侦听器将无法侦听，因为所有内容都在另一个函数中设置了。

private function onShop(evt:MouseEvent)
{
        shop.removeEventListener(MouseEvent.CLICK, onShop);

        var container:Sprite = new Sprite();
        var ibutton:Sprite = new Sprite();
        addChild(container);
        addChild(ibutton);
        ibutton.buttonMode = true;

        function loadImage(path:String):Loader
        {
           var request:URLRequest = new URLRequest(path);
           var loader:Loader = new Loader();
           loader.load(request);
           return loader;
        };

        var image1 = loadImage("image/inventory/shop_windoww.png");
        image1.x = 200;
        image1.y = 40;
        this.addChildAt(image1,8);
        var image2 = loadImage("image/inventory/title_window.png");
        image2.x = 200;
        image2.y = 14;
        container.addChild(image2);
        var image3 = loadImage("image/inventory/icon_window.png");
        image3.x = 177;
        image3.y = 7;
        container.addChild(image3);     
        var image4 = loadImage("image/inventory/close.png");
        image4.x = 891;
        image4.y = 39;
        ibutton.addChild(image4);       
        var image5 = loadImage("image/inventory/button_ok.png");
        image5.x = 450;
        image5.y = 485;
        ibutton.addChild(image5);       
        var image6 = loadImage("image/inventory/button_ok.png");
        image6.x = 782;
        image6.y = 485;
        ibutton.addChild(image6);       

        image4.addEventListener(MouseEvent.CLICK, test);

    }

    private function test(evt:MouseEvent)
    {
        image4.removeEventListener(MouseEvent.CLICK, test);
        trace("ca marche");
    }