效果:

<style>
ul,li,div{padding:0px;margin:0px;list-style:none;}
#mycont{width:323px;height:height:104px;}
#mytabnav{width:59px;float:left;}
#mytabnav li{width:59px;height:26px;line-height:26px;}
#mytabcont{width:260px;float:left;}
#mytabcont div{display:none;}
#mytabnav li a{
display: block;
text-decoration: none;
width: 57px;
height: 25px;
line-height: 25px;
text-align: center;
color: #553F20;
background-image: url(http://img.alimama.cn/cms/images/1328869531524.gif);
border-right: 1px solid #C6D8E0;
border-left: 1px solid #C6D8E0;
border-top: 1px solid #C6D8E0;
overflow: hidden;
}
#mytabnav li a:hover{
color: #fff;
background-color: #FF6600;
background-image: url(http://img.alimama.cn/cms/images/1324263019208.jpg);
}
.select_hover{
color: #fff;
background-color: #FF6600;
background-image: url(http://img.alimama.cn/cms/images/1324263019208.jpg);
}
</style>
<div id="mycont">
<div id="mytabnav">
<li><a href="#">中年裝</a></li>
<li><a href="#">女裝皮草</a></li>
<li><a href="#">小西裝</a></li>
<li><a href="#">棉衣女</a></li>
</div>
<div id="mytabcont">
<div style="display:block;"><a href="#"><img src="images/znz.jpg" /></a></div>
<div><a href="#"><img src="images/nzpc.jpg" /></a></div>
<div><a href="#"><img src="images/xxz.gif" /></a></div>
<div><a href="#"><img src="images/myn.jpg" /></a></div>
</div>
</div>
<script src="jquery-1.7.2.min.js"></script>
<script type="text/javascript" >
//自動變化樣式
$(document).ready(function(){
$("#mytabnav li").mouseover(function(){
$(this).addClass("select_hover").siblings().removeClass("select_hover");
var index=$(this).index();
$("#mytabcont div:eq("+index+")").show().siblings().hide();
})
})
</script>