<!doctype html>
<html>
<head>
<meta charset="UTF-8">
<title>Document</title>
<style>
*{margin:0;
padding:0;
list-style:none;}
.wrap{height:170px;
width:490px;
margin:60px auto;
overflow: hidden;
position: relative;
margin:100px auto;}
.wrap ul{position:absolute;}
.wrap ul li{height:170px;}
.wrap ol{position:absolute;
right:5px;
bottom:10px; z-index:2;}
.wrap ol li{height:20px; width: 20px;
background:#ccc;
border:solid 1px #666;
margin-left:5px;
color:#000;
float:left;
line-height:center;
text-align:center;
cursor:pointer;}
.wrap ol .on{background:#E97305;
color:#fff;}
</style>
<script type="text/javascript">
window.onload=function(){
var wrap=document.getElementById('wrap'),
pic=document.getElementById('pic'),
picLi=pic.getElementsByTagName("li");
//alert(picLi.length);
var list=document.getElementById('list').getElementsByTagName('li'),
index=0,
timer=null;
autoPlay();
function fn(obj){
for (var i = 0; i < picLi.length; i++) {
picLi[i].style.cssText="display:none";
list[i].style.cssText="background:#ccc;color:#000;";
};
picLi[obj].style.cssText="display:block";
list[obj].style.cssText="background:#e97305;color:#fff;";
}
function autoPlay(){
clearInterval(timer);
timer=setInterval(function(){
index++;
if (index>=5) {
index=0;
};
fn(index);
},500)
}
for (var i = 0; i < list.length; i++){
list[i].id=i;
list[i].onmouseover=function(){
var _this=this;
var cao=_this.id;
clearInterval(timer);
fn(cao);
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list[i].onmouseout=function(){
var _this=this;
autoPlay();
index=_this.id;
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};
for (var i = 0; i < picLi.length; i++) {
picLi[i].onmouseover=function(){
clearInterval(timer);
}
picLi[i].onmouseout=function(){
autoPlay();
}
};
}
</script>
</head>
<body>
<div id='wrap'>
<ul id="pic">
<li ><img src="http://img1.sycdn.imooc.com//54111cd9000174cd04900170.jpg" alt=""></li>
<li style="display:none"><img src="http://img1.sycdn.imooc.com//54111dac000118af04900170.jpg" alt=""></li>
<li style="display:none"><img src="http://img1.sycdn.imooc.com//54111d9c0001998204900170.jpg" alt=""></li>
<li style="display:none"><img src="http://img1.sycdn.imooc.com//54111d8a0001f41704900170.jpg" alt=""></li>
<li style="display:none"><img src="http://img1.sycdn.imooc.com//54111d7d00018ba604900170.jpg" alt=""></li>
</ul>
<ol id="list">
<li>1</li>
<li>2</li>
<li>3</li>
<li>4</li>
<li>5</li>
</ol>
</div>
</body>
</html>
