项目中要用到选择卡这种思路，所以事先自己做了个demo，仅供参考：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title></title>
<style>
* {
margin: 0;
padding: 0;
}
.main {
600px;
margin: 100px auto;
}
.clearfix:after {
content: '';
display: table;
clear: both;
}
.clearfix {
zoom: 1;
}
ul {
list-style: none;
}
li {
float: left;
100px;
height: 40px;
line-height: 40px;
text-align: center;
}
li.active{
background: #ddd; //.active是一个class类
}
.main-content{
margin-top: 40px;
}
.main-content .box {
400px;
height: 400px;
margin: 0 auto;
border: 1px solid #ddd;
display: none;
}
.main-content .box.active{
display: block;
}
</style>
</head>
<body>
<div class="main">
<ul class="clearfix list">
<li class="active">
<a href="javascript:;">菜单1</a>
</li>
<li>
<a href="javascript:;">菜单2</a>
</li>
<li>
<a href="javascript:;">菜单3</a>
</li>
<li>
<a href="javascript:;">菜单4</a>
</li>
<li>
<a href="javascript:;">菜单5</a>
</li>
<li>
<a href="javascript:;">菜单6</a>
</li>
</ul>
<div class="main-content">
<div class="box active">1</div>
<div class="box">2</div>
<div class="box">3</div>
<div class="box">4</div>
<div class="box">5</div>
<div class="box">6</div>
</div>
</div>
</body>
<script type="text/javascript" src="js/jquery-1.11.2.min.js" ></script>
<script>
$(function(){
$('.list li').on('click',function(){
$('.list li').removeClass('active');
$(this).addClass('active');
$('.main-content .box').removeClass('active');
$('.main-content .box').eq($(this).index()).addClass('active');
})
})
</script>
</html>