<!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>无标题文档</title>
<style type="text/css">
*{
margin:0px;
padding:0px;}
#kuang{
width:100%;
height:400px;
border:1px solid black;
position:relative;}
#choose{
width:30%;
height:400px;
background-color:#0C6;
position:relative;
float:left;
text-align:center;}
#picture{
width:60%;
height:400px;
background-color:#9C0;
position:relative;
float:right;}
#choose ul li{
background-color: silver;
list-style-type: none;}
#pic2,#pic3{
display:none;} </style>
</head> <body>
<div id="kuang">
<div id="choose">
<ul>
<li onmouseover="change('pic1',this)" onmouseout="change2(this)">AAA</li>
<li onmouseover="change('pic2',this)" onmouseout="change2(this)">BBB</li>
<li onmouseover="change('pic3',this)" onmouseout="change2(this)">CCC</li>
</ul>
</div>
<div id="picture">
<div id="pic1">aaaaaaaaaaaaaaaaaaaaaaaaaaaaa</div>
<div id="pic2">bbbbbbbbbbbbbbbbbbbbbbbbbbbbb</div>
<div id="pic3">ccccccccccccccccccccccccccccc</div>
</div>
</div>
</body>
</html>
<script type="text/javascript">
function change(val,obj){
obj.style.backgroundColor="#FFC12D";
if(val=='pic1'){
pic1.style.display='block';
pic2.style.display='none';
pic3.style.display='none';
}else if(val=='pic2'){
pic1.style.display='none';
pic2.style.display='block';
pic3.style.display='none';
}else if(val=='pic3'){
pic1.style.display='none';
pic2.style.display='none';
pic3.style.display='block';
}
}
function change2(val){
val.style.backgroundColor="silver";
}
</script>