//tab menu
var $ = function(i){return document.getElementById(i);}
var ua = navigator.userAgent.toLowerCase();
var isIE = (ua.indexOf("msie") > -1),isIE7 = (ua.indexOf("msie 7") > -1),isOpera = (ua.indexOf("opera") > -1),isSafari = (ua.indexOf("webkit") != -1 || ua.indexOf("khtml") != -1),isGecko = (!isSafari && ua.indexOf("gecko") > -1);

var s=0;
var t;
var rt;

/*change link*/
function setTab(m,n){
var tli=document.getElementById("tab"+m).getElementsByTagName("li");
var mli=document.getElementById("tabmains"+m).getElementsByTagName("ul");
for(i=0;i<tli.length;i++){

   try { mli[i].style.display= i==n?"block":"none";} catch(err) { }

   tli[i].className= i==n?'on':'none';
   stop();
   s=n;//使轮转从当前点继续
  
}
}
//启动轮转
function turn(){
	setTab(2,s);
	s=s+1;
	if(s>7){ s=0;}
	t =setTimeout("turn();",3000);
}
//清除轮转
function stop() 
{ 
    clearTimeout(t) ;
	clearInterval(rt) ;

}
//继续轮转
function rturn(){
	rt =setInterval("turn()",3000); 
	}