GWT 2.4. Static Google Map in Frame not working

Before this static Google map can be viewed using Frame object and what I need to do is to give the URL of the static map. Please refer to my previous post http://peyotest.blogspot.com/2011/03/gwt-google-map-static-and-dynamic.html
 
Unfortunately, when I upgraded the GWT to version 2.4, it didn't display the image.
It works fine with web page but not image.
So I searched in Google, but there is no one having problem like I did.

Since the static map is an image, so I decided to use image object in GWT and it can be loaded from URL. That's nice and easy solution for me.

Here is the new code :

package com.vcari.jscadav2.client;

import com.google.gwt.user.client.Element;
import com.google.gwt.user.client.ui.Frame;
import com.google.gwt.user.client.ui.Image;

public class SiteMapStaticMapPanel extends SiteMapPanel {

    public SiteMapStaticMapPanel(){
        super();
    }    
    
    Frame frame = new Frame("http://google.com");
    final Image image = new Image();


    @Override
    protected void onRender(Element parent, int index) {
        super.onRender(parent, index);
        //setLayout(new FitLayout());
        setBorders(false);
        image.setWidth("640");
        image.setHeight("430");
        image.setVisible(true);
        add(image);
    }
    
    /**
     * Set map center to the defined latitude and longitude
     * @param latitude
     * @param longitude
     */
    public void setMapCenter(Double latitude, Double longitude, int zoomLevel) {                
       Integer width=this.getWidth();
       Integer height=this.getHeight();
       String url="http://maps.google.com/maps/api/staticmap?center={0},{1}&zoom={2}&size={3}x{4}&maptype=roadmap&sensor=false";
       url+="&markers=color:red7C%{0},{1}";
       //url=String.format(url, latitude,longitude,zoomLevel,width,height);
       url=url.replace("{0}", latitude.toString());
       url=url.replace("{1}", longitude.toString());
       url=url.replace("{2}", String.valueOf(zoomLevel));
       url=url.replace("{3}", width.toString());
       url=url.replace("{4}", height.toString());
       url=url.replace("{5}",  Application.areaName);      
       image.setUrl(url);
    }
}