原文：http://www.cnblogs.com/wujy/p/3897501.html#undefined
一:通过结合下面两个百度实例来实现我们所要求的功能;
1:两点间步行实例:http://developer.baidu.com/map/jsdemo.htm#i6_1
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<style type="text/css">
body, html,#allmap { 100%;height: 100%;overflow: hidden;margin:0;}
</style>
<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=您的密钥"></script>
<title>步行导航检索</title>
</head>
<body>
<div id="allmap"></div>
</body>
</html>
<script type="text/javascript">
var map = new BMap.Map("allmap");
map.centerAndZoom(new BMap.Point(116.404, 39.915), 11);
var walking = new BMap.WalkingRoute(map, {renderOptions:{map: map, autoViewport: true}});
walking.search("天坛公园", "故宫");
</script>
2:折线实例:http://developer.baidu.com/map/jsdemo.htm#c1_5
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<style type="text/css">
body, html,#allmap { 100%;height: 100%;overflow: hidden;margin:0;}
</style>
<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=您的密钥"></script>
<title>折线</title>
</head>
<body>
<div id="allmap"></div>
</body>
</html>
<script type="text/javascript">
var map = new BMap.Map("allmap");
var point = new BMap.Point(116.404, 39.915);
map.centerAndZoom(point, 15);
var polyline = new BMap.Polyline([
new BMap.Point(116.399, 39.910),
new BMap.Point(116.405, 39.920),
new BMap.Point(116.425, 39.900)
], {strokeColor:"blue", strokeWeight:6, strokeOpacity:0.5});
map.addOverlay(polyline);
</script>
二:多点步行路径连线实例（完整的代码如下，都有相应说明,实例定义三个点）
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
<style type="text/css">
body, html
{
100%;
height: 100%;
overflow: hidden;
margin: 0;
}
#allmap
{
height: 50%;
40%;
float: left;
border-right: 2px solid #bcbcbc;
}
#r-result
{
height: 100%;
55%;
float: left;
}
</style>
<script src="jquery-1.3.2.min.js" type="text/javascript"></script>
<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=nLpN5iKztxIWsPqgwsyrruUG"></script>
<script type="text/javascript">
</script>
</head>
<body>
<input id="btn_show" type="button" value="button" />
<div id="allmap">
</div>
<%--style="display:none"--%>
<div id="r-result">
</div>
</body>
</html>
<script type="text/javascript">
//定义集合用来存放沿线的坐标值
var chartData = [];
//加载地图
var map = new BMap.Map("allmap");
map.centerAndZoom(new BMap.Point(118.10000, 24.46667), 11);
var walking = new BMap.WalkingRoute(map, { renderOptions: { map: map, autoViewport: true} });
var startpoint = new BMap.Point(118.112917, 24.435153);
var endpoint = new BMap.Point(118.1086487, 24.439108);
walking.search(startpoint, endpoint);
//通过setSearchCompleteCallback回调事件可以把步行间的坐标信息获取
walking.setSearchCompleteCallback(function (rs) {
var pts = walking.getResults().getPlan(0).getRoute(0).getPath();
for (var i = 0; i < pts.length; i++) {
chartData.push(new BMap.Point(pts[i].lat, pts[i].lng));
}
});
//另外两点的步行路线
var walkings = new BMap.WalkingRoute(map, { renderOptions: { map: map, autoViewport: true} });
var twoPoint = new BMap.Point(118.1286555, 24.4491888);
walkings.search(endpoint, twoPoint);
walkings.setSearchCompleteCallback(function (rs) {
var pts = walkings.getResults().getPlan(0).getRoute(0).getPath();
for (var i = 0; i < pts.length; i++) {
chartData.push(new BMap.Point(pts[i].lat, pts[i].lng));
}
});
//用来存放途经点的坐标
var viaRouteData = [];
viaRouteData.push(endpoint);
$(function () {
$("#btn_show").click(function () {
//这边故意让它晚一秒运行，因为上面获取坐标信息是比较慢又是异步
setTimeout(ShowRoute, 1000);
});
});
function ShowRoute() {
var firstPoint;
var endPoint;
var newChartData = [];
//对坐标点重新定义
$.each(chartData, function (item, value) {
newChartData.push(new BMap.Point(value.lat, value.lng));
});
//为了获得起点及终点的坐标值,方便对它进行文字处理
firstPoint = newChartData[0];
endPoint = newChartData[newChartData.length - 1];
//加载地图
var maps = new BMap.Map("r-result");
maps.centerAndZoom(new BMap.Point(118.10000, 24.46667), 15);
//把步行线路的坐标集合转化成折线
var polyline = new BMap.Polyline(newChartData, { strokeColor: "red", strokeWeight: 6, strokeOpacity: 0.5 });
maps.addOverlay(polyline);
//对起点、终点、途经点做一个简单的处理，泡泡跟文字提示
var m1 = new BMap.Marker(firstPoint);
var m2 = new BMap.Marker(endPoint);
maps.addOverlay(m1);
maps.addOverlay(m2);
var lab1 = new BMap.Label("起点", { position: firstPoint });
var lab2 = new BMap.Label("终点", { position: endPoint });
maps.addOverlay(lab1);
maps.addOverlay(lab2);
$.each(viaRouteData, function (item, value) {
var m = new BMap.Marker(value);
maps.addOverlay(m);
var lab = new BMap.Label("途经点", { position: value });
maps.addOverlay(lab);
});
}
</script>
左边是使用步行接口显示的三点连线地图,两点间都会标识起点跟终点,所以要是有多点地图上就会出现很为起点、终点的标志；右边这张是通过修改以后的地图；
编辑修改于2014-08-12
上面实例中会存在一个问题,因为如果我们存在有多点情况下会进行for循环把每两个点的路线画出来,并得到这种路线的坐标集合;不过因为获取坐标集合百度地图API是通过回调函数实现;这边不得不面对一个FOR循环里包含回调方法,导致获得坐标集合顺序会出现问题;会出现如下图那样,有些点之间错乱,图在多出一些直接;
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结合上面出现的问题对相应代码进行调整:
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<title></title>
<script src="Scripts/jquery-1.8.2.js"></script>
<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=nLpN5iKztxIWsPqgwsyrruUG"></script>
<script type="text/javascript">
$(function ()
{
$("#btn_Show").click(function () {
showMap();
});
});
var chartData = [];
function showMap() {
var startSce = $("#<%=tb_Start.ClientID%>").val();
var EndSce = $("#<%=tb_End.ClientID%>").val();
var viaArray = $("#<%=tb_via.ClientID%>").val();
$.ajax({
type: "get",
data: { startSce: startSce, viaArray: viaArray, EndSce: EndSce },
datatype: "json",
url: "Handler1.ashx",
async: false,
success: function (userInfo) {
var abc = $.parseJSON(userInfo);
$.each(abc, function (item, value) {
chartData.push(new BMap.Point(value.lan, value.yan));
})
for (var i = 0; i < chartData.length-1; i++) {
var startPoint = chartData[i];
var endPoint = chartData[i + 1];
showPath(startPoint, endPoint);
}
$.each(abc, function (item, value) {
var firstPoint = new BMap.Point(value.lan, value.yan);
var m1 = new BMap.Marker(firstPoint);
maps.addOverlay(m1);
var lab1 = new BMap.Label(item+1, { position: firstPoint });
maps.addOverlay(lab1);
});
}
});
}
function showPath(startPoint, EndPoint)
{
var walking = new BMap.WalkingRoute(map, { renderOptions: { map: map, autoViewport: true } });
walking.search(startPoint, EndPoint);
walking.setSearchCompleteCallback(function (rs) {
var abc = rs;
var pts = walking.getResults().getPlan(0).getRoute(0).getPath();
maps.addOverlay(new BMap.Polyline(pts, { strokeColor: "green", strokeWeight: 2, strokeOpacity: 1 }));
});
}
</script>
</head>
<body>
<form id="form1" runat="server">
起点:<asp:TextBox ID="tb_Start" runat="server"></asp:TextBox>
途经点(以"|"进行分隔):<asp:TextBox ID="tb_via" runat="server" Width="295px"></asp:TextBox>
终点:<asp:TextBox ID="tb_End" runat="server"></asp:TextBox>
<asp:Button ID="Button1" runat="server" Text="确认" OnClick="Button1_Click" /><br /><br />
结果显示:
<asp:Label ID="lb_message" runat="server"></asp:Label>
</form>
<br />
<br />
<input id="btn_Show" type="button" value="显示步行路线" />
步行路径图:
<div id="allmap" style=" height:900px; 1000px">
</div>
<br />
<br />
修改后的路径图:
<div id="r-result" style=" height:500px; 900px">
</div>
</body>
</html>
<script type="text/javascript">
var map = new BMap.Map("allmap");
map.centerAndZoom(new BMap.Point(118.075367, 24.44583), 15);
map.addControl(new BMap.ScaleControl());
map.addControl(new BMap.NavigationControl());
var maps = new BMap.Map("r-result");
maps.centerAndZoom(new BMap.Point(118.075367, 24.44583), 15);
maps.addControl(new BMap.ScaleControl());
maps.addControl(new BMap.NavigationControl());
</script>
主要是这里要注意(在回调过程中直接把直线画出来,不用再去获取两点间的坐标集合再去画线):
var pts = walking.getResults().getPlan(0).getRoute(0).getPath();
maps.addOverlay(new BMap.Polyline(pts, { strokeColor: "green", strokeWeight: 2, strokeOpacity: 1 }));
效果图如下：
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上面修改后的图片可以对文字跟气泡进行再处理效果如下：
主要修改JS代码如下：
$.each(abc, function (item, value) {
var firstPoint = new BMap.Point(value.lan, value.yan);
//var startIcon = new BMap.Icon("ic_map_location.png", new BMap.Size(45, 45));
//var m1 = new BMap.Marker(firstPoint, { icon: startIcon, offset: new BMap.Size(-8, -15) });
var m1 = new BMap.Marker(firstPoint);
maps.addOverlay(m1);
var lab1 = new BMap.Label(item + 1, { position: firstPoint, offset: new BMap.Size(-10, -25) });
lab1.setStyle({
color: "#fff",
fontSize: "16px",
backgroundColor: "0.05",
border: "0",
fontWeight: "bold"
});
maps.addOverlay(lab1);
});
编辑修改于2014-08-18
针对上面第二种是没有把线路坐标集合保存到数据库中,这样会出现每次页面加载都去百度那边进行获得坐标集合,针对这种情况进行修改,虽然FOR回调函数会出现错乱的问题,但这边可以加个标识让它显示出每一段集合是所属顺序,然后再进行合并出正确集合点;
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<title></title>
<script src="Scripts/jquery-1.8.2.js"></script>
<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=nLpN5iKztxIWsPqgwsyrruUG"></script>
<script type="text/javascript">
$(function () {
$("#btn_Show").click(function () {
showMap();
});
});
var chartData = [];
function showMap() {
var startSce = $("#<%=tb_Start.ClientID%>").val();
var EndSce = $("#<%=tb_End.ClientID%>").val();
var viaArray = $("#<%=tb_via.ClientID%>").val();
$.ajax({
type: "get",
data: { startSce: startSce, viaArray: encodeURI(viaArray), EndSce: EndSce },
datatype: "json",
url: "Handler1.ashx",
async: false,
success: function (userInfo) {
var abc = $.parseJSON(userInfo);
$.each(abc, function (item, value) {
chartData.push(new BMap.Point(value.lan, value.yan));
})
for (var i = 0; i < chartData.length - 1; i++) {
var startPoint = chartData[i];
var endPoint = chartData[i + 1];
showPath(startPoint, endPoint,i);
}
}
});
}
function showPath(startPoint, EndPoint,PointIndex) {
var walking = new BMap.WalkingRoute(map, { renderOptions: { map: map, autoViewport: true } });
walking.search(startPoint, EndPoint);
walking.setSearchCompleteCallback(function (rs) {
var pts = walking.getResults().getPlan(0).getRoute(0).getPath();
var ptsJson = JSON.stringify(pts);
$.ajax({
type: "post",
data: { SpointArray: ptsJson, PointIndex: PointIndex },
datatype: "json",
url: "Handler3.ashx",
async: false,
success: function (userInfo) {
}
});
});
}
</script>
Handler3代码如下:
using Newtonsoft.Json;
namespace WebApplication1
{
/// <summary>
/// Handler3 的摘要说明
/// </summary>
public class Handler3 : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
string start = context.Request["SpointArray"];
string PointIndex = context.Request["PointIndex"];
List<ResultList> list = JsonConvert.DeserializeObject<List<ResultList>>(start);
List<ResultList> newList = new List<ResultList>();
foreach (var item in list)
{
bool result = newList.Where(o => o.lng == item.lng && o.lat == item.lat).Count()== 0;
if (result)
{
newList.Add(item);
}
}
FileText.WriteString(start + "|" + PointIndex);
string newResult = "";
foreach (var item in newList)
{
//保存到数据库中,顺序标识也要保存起来PointIndex
newResult += "new ResultList(){lng=" + item.lng + ",lat=" + item.lat + "},";
}
FileText.WriteString("修改后的结节:" + newResult);
context.Response.Write("Hello World");
}
public bool IsReusable
{
get
{
return false;
}
}
}
public class ResultList
{
public double lng { get; set; }
public double lat { get; set; }
}
}
显示代码如下:
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<meta name="viewport" content="initial-scale=1.0, user-scalable=no" />
<style type="text/css">
body, html,#allmap { 100%;height: 100%;overflow: hidden;margin:0;}
</style>
<script type="text/javascript" src="Scripts/jquery-1.8.2.js"></script>
<script type="text/javascript" src="http://api.map.baidu.com/api?v=2.0&ak=nLpN5iKztxIWsPqgwsyrruUG"></script>
<title></title>
</head>
<body>
<div id="allmap"></div>
</body>
</html>
<script type="text/javascript">
$(function () {
abc();
});
function abc() {
var map = new BMap.Map("allmap");
map.centerAndZoom(new BMap.Point(118.10000, 24.46667), 15);
var chartData = [];
$.ajax({
type: "get",
datatype: "json",
url: "Handler4.ashx",
async: false,
success: function (userInfo) {
var abc = $.parseJSON(userInfo);
$.each(abc, function (item, value) {
chartData.push(new BMap.Point(value.lng, value.lat));
})
var polyline = new BMap.Polyline(chartData, { strokeColor: "blue", strokeWeight: 6, strokeOpacity: 0.5 });
map.addOverlay(polyline);
},
error: function (error) {
}
});
}
</script>
Handler4代码如下(要按标识顺序读出坐标点集合):
using Newtonsoft.Json;
namespace WebApplication1
{
/// <summary>
/// Handler4 的摘要说明
/// </summary>
public class Handler4 : IHttpHandler
{
public void ProcessRequest(HttpContext context)
{
List<ResultList> newList = new List<ResultList>()
{
//从数据库获得顺序集合
new ResultList(){lng=118.07572,lat=24.456086},new ResultList(){lng=118.075747,lat=24.455756},new ResultList(){lng=118.075728,lat=24.455776},new ResultList(){lng=118.075698,lat=24.455776},new ResultList(){lng=118.075628,lat=24.455775},new ResultList(){lng=118.075419,lat=24.455712},new ResultList(){lng=118.075269,lat=24.455641},new ResultList(){lng=118.075388,lat=24.455422},new ResultList(){lng=118.075518,lat=24.455114},new ResultList(){lng=118.075528,lat=24.455094},new ResultList(){lng=118.075648,lat=24.454865},new ResultList(){lng=118.075768,lat=24.454656},new ResultList(){lng=118.075848,lat=24.454497},new ResultList(){lng=118.075858,lat=24.454427},new ResultList(){lng=118.075848,lat=24.454357},new ResultList(){lng=118.075818,lat=24.454226},new ResultList(){lng=118.075788,lat=24.454246},new ResultList(){lng=118.075768,lat=24.454256},new ResultList(){lng=118.075748,lat=24.454246},new ResultList(){lng=118.075728,lat=24.454225},new ResultList(){lng=118.075678,lat=24.454135},new ResultList(){lng=118.075579,lat=24.454054},new ResultList(){lng=118.075448,lat=24.453973},new ResultList(){lng=118.075438,lat=24.453943},new ResultList(){lng=118.075389,lat=24.453873},new ResultList(){lng=118.075319,lat=24.453791},new ResultList(){lng=118.075319,lat=24.453752},new ResultList(){lng=118.075289,lat=24.453632},new ResultList(){lng=118.07517,lat=24.453415},new ResultList(){lng=118.075022,lat=24.453437},new ResultList(){lng=118.075199,lat=24.45332},new ResultList(){lng=118.075179,lat=24.453221},new ResultList(){lng=118.075149,lat=24.45312},new ResultList(){lng=118.075149,lat=24.45288},new ResultList(){lng=118.075159,lat=24.45273},new ResultList(){lng=118.075199,lat=24.452601},new ResultList(){lng=118.075309,lat=24.452481},new ResultList(){lng=118.075419,lat=24.452373},new ResultList(){lng=118.075569,lat=24.452264},new ResultList(){lng=118.075608,lat=24.452235},new ResultList(){lng=118.075828,lat=24.452096},new ResultList(){lng=118.075908,lat=24.452068},new ResultList(){lng=118.076047,lat=24.452039},new ResultList(){lng=118.076157,lat=24.45204},new ResultList(){lng=118.076207,lat=24.451961},new ResultList(){lng=118.076287,lat=24.451821},new ResultList(){lng=118.076417,lat=24.451642},new ResultList(){lng=118.076487,lat=24.451543},new ResultList(){lng=118.076577,lat=24.451454},new ResultList(){lng=118.076607,lat=24.451425},new ResultList(){lng=118.076906,lat=24.451117},new ResultList(){lng=118.077026,lat=24.451008},new ResultList(){lng=118.077086,lat=24.450908},new ResultList(){lng=118.077205,lat=24.450769},new ResultList(){lng=118.077306,lat=24.450651},new ResultList(){lng=118.077496,lat=24.450472},new ResultList(){lng=118.077575,lat=24.450402},new ResultList(){lng=118.077615,lat=24.450353},new ResultList(){lng=118.077685,lat=24.450333},new ResultList(){lng=118.077695,lat=24.450263},new ResultList(){lng=118.077685,lat=24.450203},new ResultList(){lng=118.077665,lat=24.450104},new ResultList(){lng=118.077625,lat=24.450004},new ResultList(){lng=118.077615,lat=24.449953},new ResultList(){lng=118.077615,lat=24.449893},new ResultList(){lng=118.077636,lat=24.449843},new ResultList(){lng=118.077706,lat=24.449704},new ResultList(){lng=118.077716,lat=24.449654},new ResultList(){lng=118.077706,lat=24.449584},new ResultList(){lng=118.077623,lat=24.44948},new ResultList(){lng=118.077556,lat=24.449392},new ResultList(){lng=118.077456,lat=24.449292},new ResultList(){lng=118.077337,lat=24.449161},new ResultList(){lng=118.077306,lat=24.44912},new ResultList(){lng=118.077236,lat=24.44906},new ResultList(){lng=118.077057,lat=24.448918},new ResultList(){lng=118.077037,lat=24.448908},new ResultList(){lng=118.076977,lat=24.448868},new ResultList(){lng=118.076827,lat=24.448777},new ResultList(){lng=118.076698,lat=24.448685},new ResultList(){lng=118.076667,lat=24.448655},new ResultList(){lng=118.076558,lat=24.448614},new ResultList(){lng=118.076189,lat=24.448461},new ResultList(){lng=118.076049,lat=24.448419},new ResultList(){lng=118.075659,lat=24.448305},new ResultList(){lng=118.07537,lat=24.448073},new ResultList(){lng=118.075341,lat=24.448042},new ResultList(){lng=118.075111,lat=24.448369},new ResultList(){lng=118.075061,lat=24.448389},new ResultList(){lng=118.075031,lat=24.448389},new ResultList(){lng=118.074991,lat=24.448398},new ResultList(){lng=118.074971,lat=24.448429},new ResultList(){lng=118.074921,lat=24.448638},new ResultList(){lng=118.074911,lat=24.448657},new ResultList(){lng=118.074821,lat=24.448677},new ResultList(){lng=118.074802,lat=24.448676},new ResultList(){lng=118.074782,lat=24.448696},new ResultList(){lng=118.074771,lat=24.448717},new ResultList(){lng=118.074761,lat=24.448746},new ResultList(){lng=118.074761,lat=24.448786},new ResultList(){lng=118.07478,lat=24.448817},new ResultList(){lng=118.074652,lat=24.448695},new ResultList(){lng=118.074482,lat=24.448693},new ResultList(){lng=118.074462,lat=24.448703},new ResultList(){lng=118.074452,lat=24.448743},new 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};
string strSerializeJSON = JsonConvert.SerializeObject(newList);
context.Response.Write(strSerializeJSON);
}
public bool IsReusable
{
get
{
return false;
}
}
}
}
效果图:
另：给标记点增加点击事件并弹窗（注要用到的openInfoWindow，其中enableMessage:false是把窗口上的小手机关闭）；
$.each(abc, function (item, value) {
var firstPoint = new BMap.Point(value.lan, value.yan);
//var startIcon = new BMap.Icon("ic_map_location.png", new BMap.Size(45, 45));
//var m1 = new BMap.Marker(firstPoint, { icon: startIcon, offset: new BMap.Size(-8, -15) });
var m1 = new BMap.Marker(firstPoint);
var infoWindow = new BMap.InfoWindow("当前第"+(item+1)+"景点：厦门海底世界", { enableMessage: false, 30, height: 20 });
m1.addEventListener("click", function ()
{
this.openInfoWindow(infoWindow);
});
maps.addOverlay(m1);
var lab1 = new BMap.Label(item + 1, { position: firstPoint, offset: new BMap.Size(-10, -25) });
lab1.setStyle({
color: "#fff",
fontSize: "16px",
backgroundColor: "0.05",
border: "0",
fontWeight: "bold"
});
maps.addOverlay(lab1);
});
编辑修改于2014-08-27
针对弹出提示窗在For里面要使用JS的闭包功能，否则会出现所有提示全部变成最后一个，代码如下：
for (var i = 0; i < result.length; i++) {
var firstPoint = new BMap.Point(result[i].PointLng, result[i].PointLat);
var m1 = new BMap.Marker(firstPoint);
var winfowText = "[途经点]:" + result[i].PointLable;
var labText = result[i].PointOrder;
if (result[i].PointType == "0" || result[i].PointType == "1") {
if (result[0].PointLng == result[result.length - 1].PointLng && result[0].PointLat == result[result.length - 1].PointLat) {
labText = "并";
winfowText = "[起点|终点]:" + result[0].PointLable;
}
else {
if (result[i].PointType == "0") {
labText = "起";
winfowText = "[起点]:" + result[i].PointLable;
}
else {
labText = "终";
winfowText = "[终点]:" + result[i].PointLable;
}
}
}
(function (x) {
var infoWindow = new BMap.InfoWindow(winfowText, { enableMessage: false, 30, height: 20 });
m1.addEventListener("click", function () {
this.openInfoWindow(infoWindow);
});
})(i);
maps.addOverlay(m1);
var lab1 = new BMap.Label(labText, { position: firstPoint, offset: new BMap.Size(-10, -25) });
lab1.setStyle({
color: "#fff",
fontSize: "16px",
backgroundColor: "0.05",
border: "0",
fontWeight: "bold"
});
maps.addOverlay(lab1);
}