var ref:UIComponent = new UIComponent();
         
        map = new UMap();
        
        addOverlaysToUmap(map, _layer1); // from http://www.umapper.com
        
        map.setCenter(new LatLng(52.33313628963941, 4.865913391113281), 12);
        map.setZoom(15); // explicit
        map.setSize(this.width, this.height);
        
         
        ref.addChild(map);
        mapCanvas.addChild(ref);