//创建对象
//function CreateXMLHTTP()
  //{
	      // try{return new ActiveXObject('MSXML2.XMLHTTP');}catch(x){}
	      // try{return new ActiveXObject('Microsoft.XMLHTTP');}catch(x){}
	      // throw(new Error(-1,'不能创建XMLHTTP'));
		   
  //}         
   	function CreateXMLHTTP(){
	var xmlhttptemp;
	if(window.ActiveXObject){
		xmlhttptemp = new ActiveXObject("Microsoft.XMLHTTP");
	}
	else if(window.XMLHttpRequest){
		xmlhttptemp = new XMLHttpRequest();
	}
	else xmlhttptemp = null;
	return xmlhttptemp;
}

//一级类别变动时,加入二级类别//ClassCodeobjSource,objTarget
function LoadSubClass(objSource,objTarget)
{	
 var ClassCode=objSource.value;//options[objSource.selectedIndex].value;
 //alert(ClassCode);
 if(ClassCode.length>0)
  {    
	//document.form1.elements(objTarget).options.length=0;
	objTarget.options.length=0;
	var xmlhttp = CreateXMLHTTP();
	//var url = "Http://www.cg51.net/";	
	var url=document.location.href;
	var LastUrl=url.substring(7,url.length);	
	url = "http://"+LastUrl.substring(0,LastUrl.indexOf("\/"))+"/js/GetXml.aspx?ClassCode="+ClassCode;
	xmlhttp.open("GET",url,false);
	xmlhttp.setRequestHeader("Content-Type","text/xml");
	xmlhttp.send();
	
	var xmlDoc=new ActiveXObject("Microsoft.XMLDOM");	
	xmlDoc.async="false";
	xmlDoc.loadXML(xmlhttp.responseXML.xml);
		
	var root=xmlDoc.documentElement;
	
	var optOne=new Option();
	optOne.value="";
	optOne.text="所有小类";//document.Form1.JobClassTwo
	objTarget.options.add(optOne);
	
	for(var i=0;i<root.childNodes.length;i++)
	{
		var child=root.childNodes[i];
		var opt=new Option();
		opt.value=child.childNodes[1].text;
		opt.text=child.childNodes[2].text;
		objTarget.options.add(opt);
	}
	if(root.childNodes.length==0)
	{
		objTarget.style.display="none";
	}
	else
	{
		objTarget.style.display="";
	}
  }
}


//二级类别变动时,加入三级类别//ClassCodeobjSource,objTarget
function TowLoadSubClass(objSource,objTarget)
{	
 var ClassCode=objSource.value;//options[objSource.selectedIndex].value;
 //alert(ClassCode);
 if(ClassCode.length>0)
  {    
	//document.form1.elements(objTarget).options.length=0;
	objTarget.options.length=0;
	var xmlhttp = CreateXMLHTTP();
	var url=document.location.href;
	var LastUrl=url.substring(7,url.length);
	url = "http://"+LastUrl.substring(0,LastUrl.indexOf("\/"))+"/js/GetXml.aspx?ClassCode="+ClassCode;
	xmlhttp.open("GET",url,false);
	xmlhttp.setRequestHeader("Content-Type","text/xml");
	xmlhttp.send();
	
	var xmlDoc=new ActiveXObject("Microsoft.XMLDOM");	
	xmlDoc.async="false";
	xmlDoc.loadXML(xmlhttp.responseXML.xml);
		
	var root=xmlDoc.documentElement;
	
	var optOne=new Option();
	optOne.value="";
	optOne.text="不限";//document.Form1.JobClassTwo
	objTarget.options.add(optOne);
		
	for(var i=0;i<root.childNodes.length;i++)
	{
		var child=root.childNodes[i];
		var opt=new Option();
		opt.value=child.childNodes[1].text;
		opt.text=child.childNodes[2].text;
		objTarget.options.add(opt);
	}
	
	if(root.childNodes.length==0)
	{
		objTarget.style.display="none";
	}
	else
	{
		objTarget.style.display="";
	}
  }
  else
  {
	objTarget.options.length=0;
	var optOne=new Option();
	optOne.value="";
	optOne.text="不限";//document.Form1.JobClassTwo
	objTarget.options.add(optOne);
	objTarget.style.display="none";
  }
}