// JavaScript Document

				
					/*导航*/
					function menu()
					{
						var litag=document.getElementById("menu").document.getElementsByTagName("li");<!--获取ID为"menu"标签下的所有LI的标签-->
						for (var i=0;i<litag.length;i++)
						{
							litag[i].onmouseover=function()
							{
								this.className='show';<!--把当LI标签设置类为“show”-->
							}
							litag[i].onmouseout=function()
							{
								this.className='';<!--把当LI标签设置类为“空”-->
							}
						}
					}
					
					
					
					
							<!--
					/*第二个，信息列表TAB切换*/
					function setTab(name,cursel,n){
					for(i=1;i<=n;i++){
					var menu1=document.getElementById(name+i);
					var con=document.getElementById("con_"+name+"_"+i);
					menu1.className=i==cursel?"hover":"";
					con.style.display=i==cursel?"block":"none";
					}
					}
					//-->
					
					
					// --- 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";
					}
				   }
				  }
				 }