function getHttpRequest(){
var httpRequest;
       if (window.XMLHttpRequest){ // Mozilla, Safari,...
           httpRequest = new XMLHttpRequest();
           if (httpRequest.overrideMimeType){
               httpRequest.overrideMimeType('text/xml');
           }
       }else if (window.ActiveXObject){ // IE
           try{
               httpRequest = new ActiveXObject("Msxml2.XMLHTTP");
           }catch(e){
               try {
                   httpRequest = new ActiveXObject("Microsoft.XMLHTTP");
               }catch(e){}
           }
       }
       return httpRequest;
}


function getAreaByNode(nodeID)
{
var HTTP_HOST="http://"+location.host;
var XMLHttp = getHttpRequest();
XMLHttp.open("GET",HTTP_HOST+"/ISN_Client_v3/getArea.asp?id="+nodeID+"&isXML=1",false);
XMLHttp.send(null);

	if(XMLHttp.readyState == 4)
	{
		if(XMLHttp.status == 200)
		{
			return XMLHttp.responseXML;
		}
	}
}


//===================2=======================
function getCity(_sField,_areaIDSaveTo,_areaStrSaveTo,areaID,areaStr){
	var sField=document.getElementById(_sField);
	var areaIDSaveTo=document.getElementById(_areaIDSaveTo);
	var areaStrSaveTo=document.getElementById(_areaStrSaveTo);
	if(areaIDSaveTo!=null) areaIDSaveTo.value=areaID;//保存区域文本方便调用
	if(areaStrSaveTo!=null){
		if(areaID.indexOf("11")==0) areaStrSaveTo.value="北京市";
		else if(areaID.indexOf("12")==0) areaStrSaveTo.value="天津市";
		else if(areaID.indexOf("31")==0) areaStrSaveTo.value="上海市";
		else if(areaID.indexOf("50")==0) areaStrSaveTo.value="重庆市";
		else if(areaID.indexOf("71")==0) areaStrSaveTo.value="台湾省";
		else if(areaID.indexOf("81")==0) areaStrSaveTo.value="香港";
		else if(areaID.indexOf("82")==0) areaStrSaveTo.value="澳门";
		else areaStrSaveTo.value=areaStr;
	}

	var getAreaID=String(areaID).substring(0,4)+"00";
	var cityValue=String(areaID);

	var xmlDom=getAreaByNode(getAreaID);
	var treeNode=xmlDom.documentElement.childNodes;

	var node;
	//清空option
	sField.length=0;
	//新节点，保存默认值
	node=sField.appendChild(document.createElement("option"));
	node.setAttribute("value",getAreaID);
	node.appendChild(document.createTextNode("选择区、县级市、县"));
	for(var j=0;j<treeNode.length;j++)
	{
		node=sField.appendChild(document.createElement("option"));
		node.setAttribute("value",treeNode.item(j).getAttribute("id"));
		node.appendChild(document.createTextNode(treeNode.item(j).getAttribute("n")));
		//node.appendChild(document.createTextNode(treeNode.item(j).firstChild.data));

		if(treeNode.item(j).getAttribute("id")==cityValue)
		{
			node.setAttribute("selected","selected");
		}
	}

}

function getCapital(_sField,_areaIDSaveTo,_areaStrSaveTo,areaID,areaStr){
	var sField=document.getElementById(_sField);
	var areaIDSaveTo=document.getElementById(_areaIDSaveTo);
	var areaStrSaveTo=document.getElementById(_areaStrSaveTo);
	if(areaIDSaveTo!=null) areaIDSaveTo.value=areaID;//保存区域文本方便调用
	if(areaStrSaveTo!=null) areaStrSaveTo.value=areaStr;


	var getAreaID=String(areaID).substring(0,2)+"0000";
	var capitalValue=String(areaID).substring(0,4)+"00";

	var xmlDom=getAreaByNode(getAreaID);
	var treeNode=xmlDom.documentElement.childNodes;

	var node;
	//清空option
	sField.length=0;
	//新节点，保存默认值
	node=sField.appendChild(document.createElement("option"));
	node.setAttribute("value",getAreaID);
	node.appendChild(document.createTextNode("选择城市"));
	for(var j=0;j<treeNode.length;j++)
	{
		node=sField.appendChild(document.createElement("option"));
		node.setAttribute("value",treeNode.item(j).getAttribute("id"));
		node.appendChild(document.createTextNode(treeNode.item(j).getAttribute("n")));
		//node.appendChild(document.createTextNode(treeNode.item(j).firstChild.data));

		if(treeNode.item(j).getAttribute("id")==capitalValue)//capitalCNValue||treeNode.item(j).getAttribute("id")==areaIDValue)
		{
			node.setAttribute("selected","selected");
		}
	}

}

function changeArea2(_sField,_saveTo,changeValue,onChangeArea)
{
	var sField=document.getElementById(_sField);
	var saveTo=document.getElementById(_saveTo);
	if(String(changeValue)!="undefined")
	{
		sField.value=changeValue;
		saveTo.value=changeValue;
	}

this.onChangeArea=onChangeArea;

if(String(this.onChangeArea)!="undefined")
{
//	try{
		eval(this.onChangeArea);
//	}catch(e){};
}
	return;
}

function removeAreaOption(_sField,text){
	var sField=document.getElementById(_sField);
	if(sField!=null){
		sField.options.length=0;
	}
	if(String(text)!="undeined"){
		node=sField.appendChild(document.createElement("option"));
		node.setAttribute("value","");
		node.appendChild(document.createTextNode(text));
	}
}

//================getArea=============
function initArea(){
//区域字段部份
var areaIDField=document.getElementById("areaID");
if(areaIDField!=null){
	var areaIDValue=String(areaIDField.value);
	var provinceCNValue=areaIDValue.substring(0,2)+"0000";
	var provinceCNField=document.getElementById("s_provinceCN");
	
	if(provinceCNField!=null)
	{
		for(var i=0;i<provinceCNField.options.length;i++)
		{
			if(provinceCNField.options[i].value==provinceCNValue)
			{
				provinceCNField.options[i].selected=true;
				break;
			}
		}
		
		getCapital("s_capitalCN","undefined","undefined",areaIDValue);
		getCity("s_cityCN","undefined","undefined",areaIDValue);
	}
}
}