function byDistrict(){  
       var partition = new AMap.Partition();  //创建一个新的行政规划类
       partition.byDistrict(district,city,byDistricty_CallBack);  //行政规划查询
    } 

 function byDistricty_CallBack(data){
        showTime();document.getElementById("textUniqId").value = data.uniqid;
        var resultStr="";  
        if(data.status =="E0")  
        {  
            var lineNum = data.list.length; //返回总数.  
            resultCount=lineNum;  
            var content="";  
             for(var i=0;i<lineNum;i++){  
                    content += "<div style=\"cursor:pointer;\" onmouseover=openMarkerTipById1(this) onmouseout=clearbackground(this) onclick=\"drawpolygon(‘"+data.list[i].coords+"‘,‘"+data.list[i].name+"‘)\"><dl>";  
                    content +="<dt>"+"区县名称："+data.list[i].name+"<dt>区县代码："+data.list[i].adcode+"</dt>"+"<dt>区县所属城市区号："+data.list[i].citycode+"</dt>";  
                    content+="</dl></div>";  
             }  
                resultStr+=content;  
            }  
        else if(data.status =="E1")  
        {  
             resultStr = "未查找到任何结果!<br />建议：<br />1.请确保所有字词拼写正确。<br />2.尝试不同的关键字。<br />3.尝试更宽泛的关键字。";     
        }  
        else  
        {  
             resultStr= "错误信息："+data.state+"请对照API Server v2.0.0 简明提示码对照表查找错误类型";  
        }  
        document.getElementById("result").innerHTML = resultStr;            
    }  

    function drawpolygon(arr,name){  
        mapObj.clearMap();  
        var polygonArr = new Array();  
        var district = arr.split(";");  
        var lnglat = new Array();  
        for(var e=0;e<district.length-1;e++){  
            var lnglat=district[e].split(",");  
            polygonArr.push(new AMap.LngLat(lnglat[0],lnglat[1]));  
        }  
        polygon=new AMap.Polygon({     
            path:polygonArr,//设置多边形边界路径  
            strokeColor:"#0000ff", //线颜色  
            strokeOpacity:0.2, //线透明度   
            strokeWeight:3,    //线宽   
            fillColor: "#f5deb3", //填充色  
            fillOpacity: 0.35//填充透明度  
        });
        polygon.setMap(mapObj);  
        mapObj.setFitView();  
    }