代码如下：
<html><head>
<style type="text/css">
*
{
padding-bottom: 0px
margin: 0px
padding-left: 0px
padding-right: 0px
font-size: 12px
padding-top: 0px
}
BODY
{
padding-left: 20px
padding-top: 20px
}
.wid240
{
width: 242px
margin-bottom: 20px
}
.wid180
{
width: 182px
}
.tab
{
border-bottom: #000 1px solid
border-left: #000 1px solid
border-top: #000 1px solid
border-right: #000 1px solid
}
.tab UL
{
zoom: 1
clear: both
}
.tab UL:after
{
display: block
height: 0px
visibility: hidden
clear: both
content: ""
}
.tab UL LI
{
text-align: center
line-height: 26px
width: 60px
display: inline
background: #000
float: left
height: 26px
color: #fff
}
.tab UL LI.on
{
background: #fff
color: #000
}
.tabList
{
border-bottom: #000 1px solid
border-left: #000 1px solid
height: 150px
border-top: #000 1px
border-right: #000 1px solid
}
.tabList .one
{
padding-bottom: 10px
padding-left: 10px
padding-right: 10px
display: none
color: #ff0000
padding-top: 10px
}
.tabList .block
{
display: block
}
</style>
<script type="text/javascript">
function setTab(name,m,n){
for( var i=1i<=ni++){
var menu = document.getElementById(name+i)
var showDiv = document.getElementById("cont_"+name+"_"+i)
menu.className = i==m ?"on":""
showDiv.style.display = i==m?"block":"none"
}
}
</script>
<meta name="GENERATOR" content="MSHTML 8.00.7600.16535">
</head>
<body>
<div class="wid240">
<div class="tab">
<ul>
<li id="one1" class="on" onmouseover='setTab("one",1,4)'>one1 </li>
<li id="one2" onmouseover='setTab("one",2,4)'>one2 </li>
<li id="one3" onmouseover='setTab("one",3,4)'>one3 </li>
<li id="one4" onmouseover='setTab("one",4,4)'>one4 </li>
</ul>
</div>
<div class="tabList">
<div id="cont_one_1" class="one block">
cont_one_1</div>
<div id="cont_one_2" class="one">
cont_one_2</div>
<div id="cont_one_3" class="one">
cont_one_3</div>
<div id="cont_one_4" class="one">
cont_one_4</div>
</div>
</div>
<div class="wid180">
<div class="tab">
<ul>
<li id="tow1" class="on" onclick='setTab("tow",1,3)'>tow1 </li>
<li id="tow2" onclick='setTab("tow",2,3)'>tow2 </li>
<li id="tow3" onclick='setTab("tow",3,3)'>tow3 </li>
</ul>
</div>
<div class="tabList">
<div id="cont_tow_1" class="one block">
cont_tow_1</div>
<div id="cont_tow_2" class="one">
cont_tow_2</div>
<div id="cont_tow_3" class="one">
cont_tow_3</div>
</div>
</div>
</body>
</html>
直接复制到本地html页面运行就可以，望采纳，谢谢！
mouseenter 改成 click放在 head 不生效是因为选项卡的元素还没有生成，所以这个事件无法绑定到目标对象上。
可以改成下面的代码，在网页加载完毕后再绑定事件，这样就可以放在 <head>中：
$(document).ready(function(){
$(".dt_tab li").mouseenter(function () {
if(! $(this).hasClass(".showed")){
$(".showed").removeClass("showed")
$(this).addClass("showed")
$(".dt_tab>div").eq($(this).index()).addClass("showed")
}
})
})
前段时间写了个tabs 选项卡切换效果，今天抽空在原有的基础上进行了扩展，加入了自动轮播，这样就变成了类似图片轮播的效果了。html 代码：
<!DOCTYPE HTML>
<html lang="en-US">
<head>
<meta charset="UTF-8">
<title>js-tabs</title>
<link rel="stylesheet" type="text/css" href="../css/base.css" media="all"/>
<style type="text/css">
a{color:#a0b3d6}
.tabs{border:1px solid #a0b3d6margin:100pxwidth:300px}
.tabs-nav a{background:#eaf0fdline-height:30pxpadding:0 20pxdisplay:inline-blockborder-right:1px solid #a0b3d6border-bottom:1px solid #a0b3d6float:left}
.tabs-nav .select1,.tabs-nav .select2,.tabs-nav .select3,.tabs-nav .select4{background:whiteborder-bottom:1px solid white_position:relative}
.tabs-content{padding:20pxborder-top:1px solid #a0b3d6margin-top:-1px}
</style>
</head>
<body>
<div class="tabs" id="tabs">
<h2 class="tabs-nav clearfix">
<a href="javascript:">首页</a>
<a href="javascript:">技术</a>
<a href="javascript:">生活</a>
<a href="javascript:">作品</a>
</h2>
<p class="tabs-content">首页首页首页首页首页首页首页首页首页首页</p>
<p class="tabs-content">技术技术技术技术技术技术技术技术技术技术</p>
<p class="tabs-content">生活生活生活生活生活生活生活生活生活生活</p>
<p class="tabs-content">作品作品作品作品作品作品作品作品作品作品</p>
</div>
<br/><br/>
<div class="tabs" id="tabs2">
<h2 class="tabs-nav clearfix">
<a href="javascript:">11111</a>
<a href="javascript:">22222</a>
<a href="javascript:">33333</a>
</h2>
<p class="tabs-content">11111111111111111111111111111111111</p>
<p class="tabs-content ">222222222222222222222222222222222222</p>
<p class="tabs-content ">333333333333333333333333333333333333333</p>
</div>
</body>
</html>
<script type="text/javascript" src="tabs.js"></script>
<script type="text/javascript">
window.onload = function(){
tabs('tabs','click',true,1000)
tabs('tabs2','mouseover')
}
</script>
tabs.js 代码：
function tabs(id,trigger,autoplay,time){
var tabsWrap = document.getElementById(id)
var tabsBtn = tabsWrap.getElementsByTagName('h2').getElementsByTagName('a')
var tabsContent = getClass('tabs-content',tabsWrap)
var timer = null
var current = 0
show(0)
for(var i = 0,len = tabsBtn.lengthi <leni++){
tabsBtn[i].index = i
if(trigger == 'click'){
tabsBtn[i].onclick = function(){
show(this.index)
}
}else if(trigger == 'mouseover'){
tabsBtn[i].onmouseover = function(){
show(this.index)
}
}
}
if(autoplay){
autoPlay()
tabsWrap.onmouseover = function(){
clearInterval(timer)
}
tabsWrap.onmouseout = function(){
autoPlay()
}
}
function autoPlay(){
timer = setInterval(function(){
show(current)
current++
if(current >= tabsBtn.length){
current = 0
}
},time)
}
function show(n){
current = n
for(var i = 0,len = tabsBtn.lengthi <leni++){
tabsBtn[i].className = ''
tabsContent[i].style.display = 'none'
}
tabsBtn[current].className = 'select' + (current + 1)
tabsContent[current].style.display = 'block'
}
function getClass(classname,obj){
var results = []
var elems = obj.getElementsByTagName('*')
for(var i = 0i <elems.lengthi++){
if(elems[i].className.indexOf(classname) != -1){
results[results.length] = elems[i]
}
}
return results
}
}
