function ChangeProvince(obj)
{
    var selProvince=$("selProvince");
    var selCity=$("selCity");
    selCity.options.length=0;
    selCity.options.add(new Option("请选择",""));
    var province=getProvinceCodesName(obj.value);
    selProvince.options.length=0;       
    selProvince.options.add(new Option("请选择",""));
    if($("selCitySpan")!=null)
    {
        $("selCitySpan").className="";
        $("selCitySpan").innerHTML="";
    }
    if(province!=null)
    {
    for(var i=0;i<province.length;i++){
          var infos=province[i].split('_');
        selProvince.options.add(new Option(infos[1],infos[0]));}
        }
}

function getProvinceCodesName(idx)
{

switch(idx)
{
case"":
return null;
case"1":
return new Array('393_北京','402_上海','412_天津','423_重庆','2914_内蒙古','2916_河北','2917_辽宁','2918_黑龙江','2919_江苏','2920_安徽','2921_山东','2922_浙江','2923_江西','2924_福建','2925_湖南','2926_湖北','2927_河南','2928_广东','2929_海南','2930_广西','2931_贵州','2932_四川','2933_云南','2934_陕西','2935_甘肃','2936_宁夏','2937_山西','2938_西藏','2939_新疆','2940_青海','2941_吉林','2829_香港','2830_澳门')
case"2":
return null
case"3":
return null
case"4":
return new Array('1_台北市','14_基隆市','22_台北县','52_宜兰县','65_新竹市','66_新竹县','80_桃园县','94_苗栗县','113_台中市','144_彰化县','171_南投县','185_嘉义市','186_嘉义县','205_云林县','226_台南市','233_台南县','265_高雄市','277_高雄县','305_澎湖县','312_屏东县','346_台东县','363_花莲县','384_连江县','389_南海诸岛')
case"5":
return null
}
}
function ChangeCity(url,obj)
{
 if($("selCitySpan")!=null)
    {
        $("selCitySpan").className="";
        $("selCitySpan").innerHTML="";
    }
    var xmlHttp;
    try
    {
        xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
    }
    catch(e)
    {
        xmlHttp = new XMLHttpRequest();
    }
    xmlHttp.open("get",url,true);
    xmlHttp.onreadystatechange = function()
        {
            if(xmlHttp.readyState == 4 && xmlHttp.status == 200)
            {
                var myResponse;
                myResponse= xmlHttp.responseText;
                obj.options.length=0;
                obj.options.add(new Option("请选择",""));
                if(myResponse.length>0)
                {
                    var infos=myResponse.split(',');
                    for(var i=0;i<infos.length;i++)
                    {
                        var citys=infos[i].split('_');
                        obj.options.add(new Option(citys[1],citys[0]));
                    }
                }
            }
        }
    xmlHttp.send(null);
  }