var xmlhttp = false;
var docUniversitys;
function $(item){return document.getElementById(item);}
function getSchool( pId ){
	xmlhttp = createXMLHTTP();
	var url="qtinfo/getUniversityCollege.action?province.provinceId="+pId;
	xmlhttp.open('GET',url,true);
	xmlhttp.onreadystatechange = getUniversityInfos;
	xmlhttp.send(null);
	$("pName").innerHTML= $("p_"+pId).innerHTML;
	var uNum = $("uInfo");
	if(uNum.childNodes.length > 0){uNum.innerHTML = "<div style=\"text-align:center;\"><img style=\"margin-top:130px;\" src=\"images/loading_32x32.gif\" /></div>";}
}
function getUniversityInfos( ){
	if (xmlhttp.readyState == 4) {
		if (xmlhttp.status == 200) {
			var data = xmlhttp.responseXML;
			callbackUniversity(data);
		}else{alert("数据获取时出错。");}
	}
}
function callbackUniversity(data) {
	if (!data) {
	} else {
		docUniversitys = data.getElementsByTagName("root")[0].childNodes;
		if(docUniversitys.length > 0){
			buildUniversitys();
		}else{
			var uNum = $("uInfo");
			uNum.innerHTML = "";
			$("U_SIZE").innerHTML=0;
			var uName = $("uName");
			uName.innerHTML = "";
			var cInfo = $("cInfo");
			cInfo.innerHTML = "";
			$("C_SIZE").innerHTML=0;
		}
	}
}
function showCollege(node){
	var tInfo = $("u_"+node);
	if(null != tInfo){$("uName").innerHTML =tInfo.innerHTML;}   
	//取到当前省的所有学校的doc
	var collegeDoc = docUniversitys[node].childNodes;
	var cInfo = $("cInfo");
	if(null != cInfo){
		if(cInfo.childNodes.length > 0){
			cInfo.innerHTML = "<div style=\"text-align:center;\"><img style=\"margin-top:130px;\" src=\"images/loading_32x32.gif\" /></div>";
		}
		var str="";
		for(var i=0;i<collegeDoc.length;i++){
			var collegeId = collegeDoc[i].getAttribute("id");
			var collegeName = collegeDoc[i].getAttribute("name");
			if(collegeId == -1){
				str += "<li>暂无学院信息</li>";
			}
			str += "<li><a href='qtinfo/toCM.action?cId="+collegeId+"'>"+collegeName+ "</a></li>"
		}
		cInfo.innerHTML = str;
		$("C_SIZE").innerHTML=i;
		DivTurn.reset('xueyuanInfo');
	}else{alert("加载页面出错，请刷新重试");}
}
function buildUniversitys( ) {
	var uInfo = $("uInfo");
	if(null != uInfo){
		if(uInfo.childNodes.length > 0){uInfo.innerHTML = "";}
		var uStr="";
		var yStr="";
		var uNum = 0;
		var yNum = 0;
		for (var i = 0; i < docUniversitys.length; i++) {
			var universityId = docUniversitys[i].getAttribute("id");
			var universityName = docUniversitys[i].getAttribute("name");
			var  universityType = docUniversitys[i].getAttribute("type"); 
				if(universityType == 1){
					++uNum;
					uStr +=  "<li><a id='u_"+i+"'  target='_self' href='javascript:void(0);showCollege(" + i +");'>" +universityName + "</a><span></span></li>";
				}else{
					++yNum;
					yStr += "<li><a id='u_"+i+"' target='_self' href='javascript:void(0);showCollege(" + i + ");'>" +universityName + "</a><span></span></li>";
				}
			}
		uInfo.innerHTML = uStr+yStr; 
		$("U_SIZE").innerHTML=i;
		DivTurn.reset('daxueInfo');
		showCollege(0);
	}else{alert("加载页面出错，请刷新重试");}
}