var map;

        
        //地图移动到新坐标
        function SetMap(y,x,m) {
            var point = new GLatLng(y, x);
			map.closeInfoWindow();
			map.openInfoWindow(point,m);
            map.setCenter(point);
			map.setZoom(20);
        }
       var baseIcon = new GIcon();
        baseIcon.shadow = "http://www.google.cn/mapfiles/shadow50.png";
        baseIcon.iconSize = new GSize(20, 34);
        baseIcon.shadowSize = new GSize(37, 34);
        baseIcon.iconAnchor = new GPoint(9, 34);
        baseIcon.infoWindowAnchor = new GPoint(9, 2);
        baseIcon.infoShadowAnchor = new GPoint(18, 25);

        //添加点
        function addmarker(posn,vartitle,varicon,description) {
            // 设置 GMarkerOptions 对象
            //markerOptions = { title: vartitle, icon: varicon };
            //var marker = new GMarker(posn, markerOptions);
		  var letter = String.fromCharCode("A".charCodeAt(0) + varicon);
          var letteredIcon = new GIcon(baseIcon);
          letteredIcon.image = "http://www.google.cn/mapfiles/marker" + letter + ".png";
 
          // 设置 GMarkerOptions 对象
          markerOptions = { icon:letteredIcon };

            var marker = new GMarker(posn, markerOptions);
            
            //click事件
            GEvent.addListener(marker, 'click', function() {
            marker.openInfoWindowHtml(vartitle);
            });
            return marker;
        }

        //获得Element
        function ge(id) { return document.getElementById(id); } 
        
        function initialize() {
        if (GBrowserIsCompatible()) {

             map = new GMap2(document.getElementById("map_canvas"));
			 

            //设置地图中心：经纬度，放大层级
//		if (wd.length==0) {
//			map.setCenter(new GLatLng(30.0026841801903, 120.582182407379), 12);
//			map.openInfoWindow(new GLatLng(30.0026841801903, 120.582182407379),"<b>中心兑奖机</b><br>地址:绍兴体彩中心<br>电话:85122726","","");
//			map.addOverlay(addmarker(new GLatLng(30.0026841801903,120.582182407379),"<b>中心兑奖机</b><br>地址:绍兴体彩中心<br>电话:85122726","",""));}
//		else{
            map.setCenter(new GLatLng(wd[0][0],wd[0][1]), 12);
			map.openInfoWindow(new GLatLng(wd[0][0], wd[0][1]),""+wd[0][2]+"","","");
//		}//起始地图中心坐标
             
            //地图类型
             //map.setMapType(G_SATELLITE_MAP);
             
			// 添加默认气泡提示

			// 在地图上添加带气泡的标注
			for (i = 0; i < wd.length; i++) {
				map.addOverlay(addmarker(new GLatLng(wd[i][0],wd[i][1]),""+wd[i][2]+"",i,""));
			}
			//添加控件
              map.addControl(new GLargeMapControl());
              //map.addControl(new GSmallMapControl());
              //map.addControl(new GSmallZoomControl());
              map.addControl(new GScaleControl());
              map.addControl(new GHierarchicalMapTypeControl());
              map.addControl(new GOverviewMapControl());
              map.addControl(new GMapTypeControl());
			  map.enableDoubleClickZoom();//允许鼠标双击放大(左键)和缩小(右键)
              map.enableScrollWheelZoom();//允许鼠标滚轮放大和


          }
        }