var xmlhttp=null;     
    function getWeather()   
    {      
        //var cityNameId=document.getElementById("cityNameId");   
       // var cityId=cityNameId.options[cityNameId.selectedIndex].text;   
       // var id=cityId.substring(cityId.indexOf("(")+1,cityId.indexOf(")"));
		
        if (window.XMLHttpRequest)   
        {   
            xmlhttp=new XMLHttpRequest();   
        }   
        else if (window.ActiveXObject)   
        {          
            xmlhttp=new ActiveXObject("Microsoft.XMLHTTP");    
        }   
        else  
        {   
            xmlhttp=new ActiveXObject("Msxml2.XMLHTTP");   
        }   
		
        xmlhttp.open("GET","http://www.webxml.com.cn/WebServices/WeatherWebService.asmx/getWeatherbyCityName?theCityName="+54161,true);   
        xmlhttp.onreadystatechange=stateChange;   
        xmlhttp.send(null);   
    }   
    function stateChange()   
    {   
       if(xmlhttp.readyState==4)   
       {   
          if(xmlhttp.status==200)   
          {   
              //获取所有返回的数据   
              var data=xmlhttp.responseXML;    
              var weather= "城市："+data.getElementsByTagName("string")[1].firstChild.nodeValue+"\n"  
                          +"温度："+data.getElementsByTagName("string")[5].firstChild.nodeValue+"\n"  
                          +"天气："+data.getElementsByTagName("string")[6].firstChild.nodeValue+"\n";  
                          //+"实况："+data.getElementsByTagName("string")[10].firstChild.nodeValue+"\n";   
              //alert(weather);
			  
			 // document.write(weather);

			  document.getElementById("Weather").innerHTML=weather;
          }   
       }   
  
    }