宝贝与店铺无法切换？请指教。
<!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>taobao</title>
<style type="text/css">
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body{font:12px/1.5 tahoma,arial,sans-serif;}
a{text-decoration:none;}
.search-container{position:relative;}
.search-tips{float:right;padding:3px 0 0 15px;}
.search-tips a{color:#999}
.search-button{float:right}
.btn-search{
background:url(http://gtms01.alicdn.com/tps/i1/T1qyj8Fc8aXXc4E9bI-400-300.png);
width:100px;
height:45px;
background-position:0 -200px;
border:0;
cursor:pointer;
}
.search-common-panel{
height:39px;
background-color:#f50;
overflow:hidden;
padding:3px 0 3px 77px;
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.search-common-panel input{
height:39px;
line-height:39px;
width:100%;
border:0 none;
outline:0;
background-color:#fff;
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.search-common-panel i{
position:absolute;
top:14px;
left:86px;
z-index:2;
color:#ccc;
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.iconfont{
font-family:iconfont;
font-size:12px;
font-style:normal;
}
ul{
list-style:none;
}
ul,li{margin:0;padding:0;}
.search-list{
position:absolute;
top:3px;
left:3px;
width:72px;
height:39px;
overflow:hidden;
background:#fff;
border-left:1px solid #f6f6f6;
border-right:1px solid #e5e5e5;
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.search-list li{
display:none;
height:39px;
line-height:39px;
overflow:hidden;
text-align:center;
}
.search-list li a{
color:#6c6c6c;
}
.search-list .selected{
background:#f6f6f6;
display:block;
}
.trigger-hover{
height:auto;
}
.trigger-hover li{
display:block;
}
</style>
</head>
<body>
<div class="search-container">
<div id="search_tab" class="search-list">
<ul>
<li id="tab_1" class="selected"><a href="#">宝贝</a></li>
<li id="tab_2"><a href="#">店铺</a></li>
</ul>
</div>
<div class="search-pannel">
<form>
<div class="search-tips">
<a href="#">
高级<br/>搜索
</a>
</div>
<div class="search-button">
<button class="btn-search" type="submit"></button>
</div>
<div class="search-common-panel">
<input type="text" />
<i class="iconfont"></i>
</div>
</form>
</div>
</div>
</body>
<script>
var getDOM=function(id){
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var el=getDOM(id)||document;
if(el.addEventListener){
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addEvent('search_tab','mouseover',function(){
this.className+=' trigger-hover';//注意：类名前加空格
});
addEvent('tab_1','mouseover',function(){
if(this.className.indexOf('selected')<0){
this.className+='selected';
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addEvent('tab_1','mouseout',function(){
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addEvent('tab_1','click',function(){
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addEvent('tab_2','mouseout',function(){
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addEvent('tab_2','click',function(){
getDOM('search_tab').className='search-list';
});
</script>
</html>
