var http_request2 = false;
function send_class_request1(url,method) {//初始化、指定处理函数、发送请求的函数
	http_request2 = false;
	//开始初始化XMLHttpRequest对象
	if(window.XMLHttpRequest) { //Mozilla 浏览器
		http_request2 = new XMLHttpRequest();
		if (http_request2.overrideMimeType) {//设置MiME类别
			http_request2.overrideMimeType('text/xml');
		}
	}
	else if (window.ActiveXObject) { // IE浏览器
		try {
			http_request2 = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				http_request2 = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {}
		}
	}
	if (!http_request2) { // 异常，创建对象实例失败
		window.alert("不能创建XMLHttpRequest对象实例.");
		return false;
	}
//	switch(method){
//		case 1: http_request2.onreadystatechange = processRequest3;break;//选择操作函数
//		case 2: http_request2.onreadystatechange = processRequest4;break;
//	}
	// 确定发送请求的方式和URL以及是否同步执行下段代码
	http_request2.open("GET", url, false);
	http_request2.send(null);
	var result = http_request2.status;
	if(result==200)
    {
		if(method==1){
			var responseText = http_request2.responseText;
		    responseText = trim(responseText);
			//alert(responseText);
			var optGroup = responseText.split("|");
			addOptionGroup2("parentID",optGroup[0],optGroup[1]);
			
		}
		if(method==2){
			var responseText = http_request2.responseText;
			responseText = trim(responseText);
			//alert(responseText);
			var optGroup = responseText.split("|");
			addOptionGroup2("Classify",optGroup[0],optGroup[1]);
		}
        //alert(http_type_request.responseText);
    }
    http_request2 = null;
}
// 处理返回信息的函数
function processRequest3() {//操作函数1,调入大类
	if (http_request2.readyState == 4) { // 判断对象状态
		if (http_request2.status == 200) { // 信息已经成功返回，开始处理信息
		    var responseText = http_request2.responseText;
		    responseText = trim(responseText);
			//alert(responseText);
			var optGroup = responseText.split("|");
			addOptionGroup2("parentID",optGroup[0],optGroup[1]);
		} else { //页面不正常
			alert("您所请求的页面有异常。");
		}
	}
}

function processRequest4() {//操作函数2,调入小分类
	if (http_request2.readyState == 4) { // 判断对象状态
		if (http_request2.status == 200) { // 信息已经成功返回，开始处理信息
			var responseText = http_request2.responseText;
			responseText = trim(responseText);
			//alert(responseText);
			var optGroup = responseText.split("|");
			addOptionGroup2("Classify",optGroup[0],optGroup[1]);
		} else { //页面不正常
			alert("您所请求的页面有异常。");
		}
	}
}

function loadParentClass() {//载入大分类
	send_class_request1("../web-inf/lib/core/apprun/yellowpages/classAjaxServer.php?type=parentClass",1);//服务端处理程序,操作函数    
//send_request("/classAjaxServer.php?type=parentClass",1);//服务端
}
function loadSubClass(value) {//载入小分类
	//alert(document.getElementById("parentClass").value);
	send_class_request1("../web-inf/lib/core/apprun/yellowpages/classAjaxServer.php?type=secondClass&id="+value,2);
}
function addOption2(objSelectNow,txt,val)
{
	/// 使用W3C标准语法为SELECT添加Option
	var objOption = document.createElement("OPTION");
	objOption.text= txt;
	objOption.value=val;
	objSelectNow.options.add(objOption);
}
function addOptionGroup2(selectId,value,name)
{
	var value = value.split("::");
	var name = name.split("::");
	var objSelect = document.getElementsByTagName("SELECT");
	var objSelectNow = objSelect[selectId];
	objSelectNow.length = 1;
	/// 成组添加Options
	for (i=0; i<value.length; i++)
	{
		addOption2(objSelectNow, name[i], value[i]);
	}
}