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<!DOCTYPE HTML>
<html>
<head>
<meta http-equiv="content-type" charset="utf-8" />
<meta http-equiv="content-type" content="text/html" />
<title>demo</title>
</head>
<style type="text/css">
*{margin:0;padding:0;}
ul,li,img{margin:0;padding:0;border:0;list-style-type:none;}
#list{height:250px;list-style-type:none;overflow:hidden;}
#luanpo{max-width:600px;height:200px;border:1px solid #CCC;margin:0 auto;position:relative;overflow:hidden;}
#imgs li{float:left;height:200px;width:600px;}
#imgs li img{height: 200px;width: 600px;}
#imgs{height:200px;background:#ddd;position:absolute;}
.a{background:red;}
.b{background:yellow;}
#num{overflow:auto;position:absolute;right:40%;bottom:0;}
#num li{float:left;height:30px;width:30px;text-align:center;line-height:30px;border:1px solid ;border-radius: 15px;margin-left:10px;cursor:pointer;z-index:2222;}
</style>
<body>
<div id="luanpo">
<ul id="imgs">
<li><img src="image/P1_bg.jpg"></li>
<li><img src="image/P2_bg.jpg"></li>
<li><img src="image/P3_bg.jpg"></li>
<li><img src="image/P1_bg.jpg"></li>
</ul>
<ul id="num">
<li class="a">1</li>
<li class="b">2</li>
<li class="b">3</li>
<li class="b">4</li>
</ul>
</div>
<script type="text/javascript">
var imgs=document.getElementById(‘imgs‘).getElementsByTagName(‘li‘);
var nums=document.getElementById("num").getElementsByTagName("li");
var luanpo=document.getElementById("luanpo");
var oimg=document.getElementById(‘imgs‘);
var iNow=0;
var dt=null;
oimg.style.width=imgs.length*imgs[0].offsetWidth+"px";
function tab(){
for(var i=0;i<nums.length;i++){
nums[i].index=i;
nums[i].onmousemove=function(){
clearInterval(dt);
iNow=this.index;
for(var i=0;i<nums.length;i++){
nums[i].className="b";
}
this.className="a";
oimg.style.left=-(imgs[0].offsetWidth*iNow)+"px"; //这边可以加上我前面所写的那个缓动框架
}
nums[i].onmouseout=function(){
start();
}
}
}
function start(){
clearInterval(dt);
dt=setInterval(function(){
if(iNow>nums.length-2){
iNow=0;
}else{
iNow++;
}
for(var k=0;k<nums.length;k++){
if(iNow==nums[k].index){nums[k].className=‘a‘;}else{nums[k].className=‘b‘;}
}
oimg.style.left=-(imgs[0].offsetWidth*iNow)+"px"; //这边可以加上我前面所写的那个缓动框架
},3000);
tab();
}
start();
</script>
</body>
</html>
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原文地址：http://www.cnblogs.com/qq928252089/p/5094763.html
