jquery 图片循环显示

http://lichengyezi.iteye.com/blog/544198

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
<script src="http://www.cssrain.cn/demo/JQuery+API/jquery-1[1].2.1.pack.js" type="text/javascript"></script> 
<style type="text/css"> 
* {margin:0;padding:0;font-size:12px;font-family:Verdana;} 
img {border:0} 
#pic{margin:5px;width:300px;height:200px;overflow:hidden;cursor:pointer;} 
#play{position:absolute;margin-left:200px;margin-top:-30px;} 
#play a{text-decoration: none;border:1px solid #CEDEF7;background-color:#E8FCEB;width:20px;height:20px;color:#2F49DF;display:block;float:left;text-align:center;line-height:20px;margin-right:3px;} 
</style> 
<script type="text/javascript"> 
var _c = _h = 0; 
$(function(){ 
    $('#play > a').click(function(){ 
        var i = $(this).attr('alt') - 1; 
        clearInterval(_h); 
        _c = i; 
        play(); 
        change(i);        
    }) 
    $("#pic img").hover(function(){clearInterval(_h)}, function(){play()}); 
    play(); 
}) 
function play() 
{ 
    _h = setInterval("auto()", 1000); 
} 
function change(i) 
{ 
    $('#play > a').css('background-color','#E8FCEB').eq(i).css('background-color','#C6FF5E').blur(); 
    $("#pic img").hide().eq(i).fadeIn('slow'); 
} 
function auto() 
{    
    _c = _c > 2 ? 0 : _c + 1; 
    change(_c); 
} 
</script> 
<title>js图片播放轮换</title> 
</head> 

<body> 
<div id="pic"> 
    <img src="http://www.cssrain.cn/demo/pic/cssrain-logo.JPG" width="300" height="200" alt="" /> 
    <img src="http://www.cssrain.cn/demo/pic/usbmingpian.jpg" width="300" height="200" alt="" /> 
    <img src="http://www.cssrain.cn/demo/pic/ganyingdeng2.jpg" width="300" height="200" alt="" /> 
    <img src="http://www.cssrain.cn/demo/pic/ganyingdeng.jpg" width="300" height="200" alt="" /> 
</div> 
<div id="play"> 
    <a href="###" alt="1" style="background-color:#C6FF5E">1</a> 
    <a href="###" alt="2" >2</a> 
    <a href="###" alt="3" >3</a> 
    <a href="###" alt="4" >4</a> 
</div> 

<br/><br/><br/><br/> 
<div>转:<a href="http://koyoz.com">koyoz.com</a>&nbsp;&nbsp;</div> 
</body> 
</html>

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