/*
 *函数功能：从href获得参数
 *sHref: http://www.cscenter.com.cn/arg.htm?arg1=d&arg2=re
 *sArgName:arg1, arg2
 *return: the value of arg. d, re
 */
function GetArgsFromHref(sHref, sArgName)
{
 var args = sHref.split("?");
 var retval = "";
 if(args[0] == sHref) /*参数为空*/
 {
   return retval; /*无需做任何处理*/
 } 
 var str = args[1];
 args = str.split("&");
 for(var i = 0; i < args.length; i ++)
 {
  str = args[i];
  var arg = str.split("=");
  if(arg.length <= 1) continue;
  if(arg[0] == sArgName) retval = arg[1];
 }
 return retval;
}

function getvalue(name)
{
var str=window.location.search;
if (str.indexOf(name)!=-1)
{
var pos_start=str.indexOf(name)+name.length+1;
var pos_end=str.indexOf("&",pos_start);
if (pos_end==-1)
{
return str.substring(pos_start);
}
else
{
return str.substring(pos_start,pos_end)
}
}
else
{
return "没有这个name值";
}
}
alert(getvalue(name));

Request = {
QueryString : function(item){
var svalue = location.search.match(new RegExp("[\?\&]" + item + "=([^\&]*)(\&?)","i"));
return svalue ? svalue[1] : svalue;
}
}
alert(Request.QueryString("id"));

var url=location.search;
var Request = new Object();
if(url.indexOf("?")!=-1)
{
 var str = url.substr(1); //去掉?号
 strs = str.toLowerCase();
 strs = strs.split("&");
 for(var i=0;i<strs.length;i++)
 {
  Request[strs[i].split("=")[0]]=unescape(strs[i].split("=")[1]);
 }
}
var mapWidth = Request["w"];
var mapHeight = Request["h"];