n4 = (document.layers)?1:0
e4 = (document.all)?1:0;
// --- 获取ClassName
document.getElementsByClassName = function(cl) {
var retnode = [];
var myclass = new RegExp('\\b'+cl+'\\b');
var elem = this.getElementsByTagName('*');
for (var j = 0; j < elem.length; j++) {
var classes = elem[j].className;
if (myclass.test(classes)) retnode.push(elem[j]);
}
return retnode;
}
// --- 隐藏所有
function HideAll() {
var items = document.getElementsByClassName("optiton");
for (var j=0; j<items.length; j++) {
items[j].style.display = "none";
}
}
// --- 设置cookie
function setCookie(sName,sValue,expireHours) {
var cookieString = sName + "=" + escape(sValue);
//;判断是否设置过期时间
if (expireHours>0) {
 var date = new Date();
 date.setTime(date.getTime + expireHours * 3600 * 1000);
 cookieString = cookieString + "; expire=" + date.toGMTString();
}
document.cookie = cookieString;
}
//--- 获取cookie
function getCookie(sName) {
  var aCookie = document.cookie.split("; ");
  for (var j=0; j < aCookie.length; j++){
var aCrumb = aCookie[j].split("=");
if (escape(sName) == aCrumb[0])
  return unescape(aCrumb[1]);
  }
  return null;
}
window.onload = function() {
var show_item = "opt_1";
if (getCookie("show_item") != null) {
 show_item= "opt_" + getCookie("show_item");
}
document.getElementById(show_item).style.display = "block";
var items = document.getElementsByClassName("title");
for (var j=0; j<items.length; j++) {
items[j].onclick = function() {
var o = document.getElementById("opt_" + this.name);
if (o.style.display != "block") {
HideAll();
o.style.display = "block";
setCookie("show_item",this.name);
}
else {
o.style.display = "none";
}
}
}
}
function showsubmenu(sid)
{
	whichEl = eval(document.getElementById("tt" + sid));
	//alert('sadas');
	if (whichEl.style.display!='block')
		{
		document.getElementById("tt" + sid).style.display="block";
		//eval("t" + sid + ".src=\"nofollow.gif\";");
		if(e4)
			document.getElementById("t" + sid).innerText="-";
		else
			document.getElementById("t" + sid).textContent="-";
		}
	else
		{
		document.getElementById("tt" + sid).style.display="none";
		//eval("t" + sid + ".src=\"plus.gif\";");
		if(e4)
			document.getElementById("t" + sid).innerText="+";
		else
			document.getElementById("t" + sid).textContent="+";
		
		}
}