//獲得元素

function $(s){ return document.getElementById?eval('document.getElementById("' + s + '")'):eval('document.all.' + s);}
function $$(s){ return document.frames?document.frames[s]:$(s).contentWindow;}


//查詢項目前期的左邊樹
function getTree(t){  
	var xmlhttp;
	try	{ xmlhttp = new XMLHttpRequest(); }
		catch (e) {
			var a = ['MSXML2.XMLHTTP.5.0','MSXML2.XMLHTTP.4.0','MSXML2.XMLHTTP.3.0', 'MSXML2.XMLHTTP','MICROSOFT.XMLHTTP.1.0','MICROSOFT.XMLHTTP.1','MICROSOFT.XMLHTTP'];
			for (var i = 0; i < a.length; i++)
			{
				try	{
					xmlhttp = new ActiveXObject(a[i]);
					break;
				} catch (e){}
			}
		}

	xmlhttp.onreadystatechange=function()
	{
		if (4==xmlhttp.readyState)
		{
			if (200==xmlhttp.status)
			{
				var data=xmlhttp.responseXML;
				var node=data.getElementsByTagName("node");
				t.add(0,-1,'&nbsp;&nbsp; <a href=\"javascript:\" onClick=\"t.openAll()\" style=\"color:\"><b>展開主欄目</b> +</a> &nbsp;<a href=\"javascript:\" onClick=\"t.closeAll()\">-</a>&nbsp;<a href=\"javascript:\" onClick=\"refreshTree(t)\" style=\"color:\">刷新</a>');
				//alert(node.length);
			
				for(var i=0;i<node.length;i++){
					var d=node[i];
					var grade=parseInt(d.getAttribute("grade"));
					var belong=parseInt(d.getAttribute("belong"));
					var title=d.getElementsByTagName("title")[0].firstChild.data;
					t.add(grade,belong,title);
				}

				//t.add(100,0,'系統設置');
				//t.add(101,100,"<a href='/s/lanmu_yj.jsp'  target='mainFrame'>一級欄目管理</a>");
				//t.add(1008,1007,"<a href='/cgi/logout.jsp'  target='mainFrame'>注銷退出</a>");


				
				$("treeDiv").innerHTML=t;
				//alert(t);	
			}
			else
			{
				alert("error");
			}
		}
	}
	

	xmlhttp.open("get", "/user/tree.jsp", true);
	//xmlhttp.setRequestHeader('Content-type','application/x-www-form-urlencoded'); 
	xmlhttp.send(null);
}

function refreshTree(t){
	$("treeDiv").innerHTML=" <img src=/user/js_frame/dtree/img/load.gif width=14 height=14> 數據讀取中，請稍候...";
	t=null;
	t=new dTree('t');
	getTree(t);
}