function mysite(s){
	return document.getElementById(s);
}
//首页广告切换
var B=BigNews={
	current:0,
	next:0,
	scrollInterval:0,
	autoScroller:0
};
BigNews.turn=function(index){
	clearInterval(BigNews.autoScroller);
	BigNews.scroll(index);
}
BigNews.scroll=function(index){
	if(!mysite('cut-ad-item')){
		clearInterval(BigNews.autoScroller);
		return;
	}
	var count=0;
	var step=450;
	var duration=16;
	var b=BigNews;
	b.next=index;
	if(index!=b.current&&count>duration/8){
		return;
	}
	clearInterval(b.scrollInterval);
	var items=mysite('cut-ad-item').getElementsByTagName('li');
	for(var i=0;i<4;i++){  
		items[i].className='';
	}
	items[index].className='set';
	var span=index-b.current;
	var begin_value=mysite('cut-ad-box').scrollTop;
	var chang_in_value=span*step+(b.current*step-begin_value);
	b.scrollInterval=setInterval(function(){doit(begin_value,chang_in_value)},10);
	function doit(b,c){
		mysite('cut-ad-box').scrollTop=cpu(count,b,c,duration);
		count++;
		if(count==duration){
			clearInterval(BigNews.scrollInterval);
			scrollInterval=0;
			count=0;
			mysite('cut-ad-box').scrollTop=b+c;
			BigNews.current=index;
		}
	}
	function cpu(t,b,c,d) {return c*((t=t/d-1)*t*t+1)+b;};
}
BigNews.auto=function(){
	clearInterval(BigNews.autoScroller);
	BigNews.autoScroller=setInterval(function(){
		BigNews.scroll(BigNews.current==3?0:BigNews.current+1);
	},3000);
}
if(document.all) {
	window.attachEvent('onload',BigNews.auto);
}
else {
	window.addEventListener('load',BigNews.auto,false);
}

//新品上市
function naCut(o) {
   try{
   o.className="set";
   var id;
   var j;
   var e;
   for (var i =1; i <3; i++) {
	id ="NA"+i;
	j = document.getElementById(id);
	e = document.getElementById("ad-NA"+i);
	if(id != o.id) {
	 j.className="";
	 e.style.display = "none";
	}
	else {
	 e.style.display = "block";
	}
   }
	}catch(e){}
}

//美容护肤
function scCut(o) {
   try{
   o.className="set";
   var id;
   var j;
   var e;
   for (var i =1; i <3; i++) {
	id ="SC"+i;
	j = document.getElementById(id);
	e = document.getElementById("ad-SC"+i);
	if(id != o.id) {
	 j.className="";
	 e.style.display = "none";
	}
	else {
	 e.style.display = "block";
	}
   }
	}catch(e){}
}

//美体瘦身
function bcCut(o) {
   try{
   o.className="set";
   var id;
   var j;
   var e;
   for (var i =1; i <3; i++) {
	id ="BC"+i;
	j = document.getElementById(id);
	e = document.getElementById("ad-BC"+i);
	if(id != o.id) {
	 j.className="";
	 e.style.display = "none";
	}
	else {
	 e.style.display = "block";
	}
   }
	}catch(e){}
}

//时尚彩妆
function mcCut(o) {
   try{
   o.className="set";
   var id;
   var j;
   var e;
   for (var i =1; i <3; i++) {
	id ="MC"+i;
	j = document.getElementById(id);
	e = document.getElementById("ad-MC"+i);
	if(id != o.id) {
	 j.className="";
	 e.style.display = "none";
	}
	else {
	 e.style.display = "block";
	}
   }
	}catch(e){}
}

//营养保健
function hcCut(o) {
   try{
   o.className="set";
   var id;
   var j;
   var e;
   for (var i =1; i <3; i++) {
	id ="HC"+i;
	j = document.getElementById(id);
	e = document.getElementById("ad-HC"+i);
	if(id != o.id) {
	 j.className="";
	 e.style.display = "none";
	}
	else {
	 e.style.display = "block";
	}
   }
	}catch(e){}
}

//超值套装
function vpCut(o) {
   try{
   o.className="set";
   var id;
   var j;
   var e;
   for (var i =1; i <3; i++) {
	id ="VP"+i;
	j = document.getElementById(id);
	e = document.getElementById("ad-VP"+i);
	if(id != o.id) {
	 j.className="";
	 e.style.display = "none";
	}
	else {
	 e.style.display = "block";
	}
   }
	}catch(e){}
}

//生活馆
function lifeCut(o) {
   try{
   o.className="set";
   var id;
   var j;
   var e;
   for (var i =1; i <6; i++) {
	id ="LC0"+i;
	j = document.getElementById(id);
	e = document.getElementById("lifeProItem_0"+i);
	if(id != o.id) {
	 j.className="";
	 e.style.display = "none";
	}
	else {
	 e.style.display = "block";
	}
   }
	}catch(e){}
}