function load() {
      if (GBrowserIsCompatible()) {
        var map = new GMap2(document.getElementById("about_map"));
         map.setCenter(new GLatLng(39.959918517398194, 116.52786254882812), 14);
				 map.addControl(new GMapTypeControl() );   // 卫星图，电子图切换按钮 不过中文地图不支持卫星图
				 map.addControl(new GScaleControl() );
		     map.addControl(new GOverviewMapControl() );    // 小地图概览
         map.addControl(new GLargeMapControl());        // 大地图控制
       //map.addControl(new GSmallMapControl() );
       

  var xzzxPoint = new GLatLng(39.959918517398194, 116.52786254882812);
  //var xzqfPoint = new GLatLng(39.93619757794847, 116.4401650428772);
  //map.openInfoWindow(xzzxPoint, document.createTextNode("双击小红球了解更多"));
  map.addOverlay(createMarker(xzzxPoint,"4indesign Studio.<br />咨询:info@4indesign.com"));
      }
    }

    //create markers
 function createMarker(point,info) { 
     var marker = new GMarker(point); 
     GEvent.addListener(marker, "click", function() {  
            marker.openInfoWindowHtml(info); 
     });
  return marker;
 }