效果图：
源代码：
代码如下:
<!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=utf-8" />
<title>Tab标签切换</title>
</head>
<style>
body{ background:#fff;}
*{ margin:0; padding:0;}
.box{ margin:20px; }
.container{background:#FFF; width:500px; clear:both; margin-top:1px; _margin-top:-1px;}
.sub-con{height:300px; width:500px;border:1px solid #3CF; background:#FFF; display:none;}
.cur-sub-con{ display:block;}
.sub-con a{ line-height:40px}
.sub-con p{ text-align:center}
.nav{ width:370px; height:28px; margin-left:10px;}
.nav ul{width:370px; height:28px;}
.nav ul li{ list-style:none; display:inline-block;width:60px; height:28px;line-height:28px; text-align:center;margin-left:-9px;*float:left;*margin-left:-1px;}
.nav ul li a{ background:#fff;border:1px solid #3CF; text-decoration:none; color:#000; height:28px;display:block;}
.nav ul li a:hover{ background:#CCEDFB}
.nav ul li a.cur{ z-index:9999;border-bottom:1px solid #FFF; color:#F00;}
</style>
<body>
<div class="box">
<div class="nav">
<ul>
<li><a href="javascript:void(0)" class="cur">Tab项1</a></li>
<li><a href="javascript:void(0)">Tab项2</a></li>
<li><a href="javascript:void(0)">Tab项3</a></li>
<li><a href="javascript:void(0)">Tab项4</a></li>
</ul>
</div>
<div class="container">
<div class="sub-con cur-sub-con"> <a href="#" title="这是容器1">这是容器1</a><p><img src="http://images.cnblogs.com/cnblogs_com/cos2004/286060/o_img001.jpg" /></p></div>
<div class="sub-con"> <a href="#" title="这是容器2">这是容器2</a><p><img src="http://images.cnblogs.com/cnblogs_com/cos2004/286060/o_img_g02.jpg" /></p></div>
<div class="sub-con"> <a href="#" title="这是容器3">这是容器3</a><p><img src="http://images.cnblogs.com/cnblogs_com/cos2004/286060/o_img_g03.jpg" /></p></div>
<div class="sub-con"> <a href="#" title="这是容器4">这是容器4</a><p><img src="http://images.cnblogs.com/cnblogs_com/cos2004/286060/o_img_g04.jpg" /></p></div>
</div>
</div>
</body>
<script src="http://ajax.googleapis.com/ajax/libs/jquery/1.4.2/jquery.min.js" type="text/javascript"></script>
<script type="text/javascript">
$(document).ready(function(){
var intervalID;
var curLi;
$(".nav li a").mouseover(function(){
curLi=$(this);
intervalID=setInterval(onMouseOver,250);//鼠标移入的时候有一定的延时才会切换到所在项，防止用户不经意的操作
});
function onMouseOver(){
$(".cur-sub-con").removeClass("cur-sub-con");
$(".sub-con").eq($(".nav li a").index(curLi)).addClass("cur-sub-con");
$(".cur").removeClass("cur");
curLi.addClass("cur");
}
$(".nav li a").mouseout(function(){
clearInterval(intervalID);
});
$(".nav li a").click(function(){//鼠标点击也可以切换
clearInterval(intervalID);
$(".cur-sub-con").removeClass("cur-sub-con");
$(".sub-con").eq($(".nav li a").index(curLi)).addClass("cur-sub-con");
$(".cur").removeClass("cur");
curLi.addClass("cur");
});
});
</script>
</html>
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