window.onload=function()
{
getCookie();
al();
daykan();

}

function al()
{
if (!document.getElementsByTagName) return; 
var anchors = document.getElementsByTagName("a"); 
for (var i=0; i<anchors.length; i++) { 
   var anchor = anchors[i]; 
   if (anchor.getAttribute("href") && 
       anchor.getAttribute("rel") == "external") 
     anchor.target = "_blank"; 
}
}

function SetCookie(name,value)
{ 
var Days = 60; //cookie 将被保存两个月 
var exp = new Date(); //获得当前时间 
exp.setTime(exp.getTime() + Days*24*60*60*1000); //换成毫秒 
document.cookie = name + "="+ escape (value) + ";expires=" + exp.toGMTString();
window.location.reload(); 
} 
/* 

功能：获取cookies函数 
参数：name，cookie名字 
*/ 
function getCookie()
{ 
var arr = document.cookie.match(new RegExp("(^| )"+"css"+"=([^;]*)(;|$)")); 
if(arr != null)
{ 
document.getElementById('cs').href ="css/body"+unescape(arr[2])+".css";
}
else
{
document.getElementById('cs').href ="css/body1.css";
}

} 
/* 
功能：删除cookies函数 
参数：name，cookie名字 
*/ 

function delCookie(name)
{ 
var exp = new Date(); //当前时间 
exp.setTime(exp.getTime() - 1); 
var cval=getCookie(name); 
if(cval!=null) document.cookie= name + "="+cval+";expires="+exp.toGMTString(); 
}



function daykan()
{
var   enable=0;   today=new   Date();   
var   day;   var   date;   
var   time_start   =   new   Date();   
var   clock_start   =   time_start.getTime(); 
if(today.getDay()==0)   day= "星期日 "   
if(today.getDay()==1)   day= "星期一 "   
if(today.getDay()==2)   day= "星期二 " 
if(today.getDay()==3)   day= "星期三 " 
if(today.getDay()==4)   day= "星期四 " 
if(today.getDay()==5)   day= "星期五 "   
if(today.getDay()==6)   day= "星期六 "   
yr   =   today.getYear(); 
if   (yr   <   1000) 
yr+=1900;   
date=yr+ "年 "+(today.getMonth()+1)+ "月 "+today.getDate()+ "日   ";   
document.getElementById("days").innerHTML ="今天是："+(date+ "   "+day+"   "); 
}







 function dh(id)
     {
          var lis=document.getElementById("top_3_2").getElementsByTagName("li");
          for(var i=0;i<lis.length;i++)
          {
               if(i==id)
               {

                lis[i].className="bt1";
                
               }
               else
               {
                 lis[i].className="bt2";
               }
          }
     }