通过onmouseover实现图片的变化 选项卡
<!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>选项卡实现img图片的变换</title>
<style type="text/css">
#main{ height:420px; width:400px;}
#head{
width:400px;
height:52px;
position:absolute;
left:10px;
top: -12px;
background-color:green;
}
#head li{ float:left; list-style:none; width:85px;}
#content{
width:400px;
height:350px;
background-color:#FC6;
text-align:center;
position:absolute;
top:36px;
left: 10px;
}
</style>
</head>
<body>
<div id="main">
<div id="head">
<ul>
<li id="tab1" onmouseover="show(1)" style="background-color:#FFF">图片一</li>
<li id="tab2" onmouseover="show(2)">图片二</li>
<li id="tab3" onmouseover="show(3)">图片三</li>
<li id="tab4" onmouseover="show(4)">图片四</li>
</ul>
</div>
<div id="content">
<p id="p1"><img src="图片0"/></p>
<p id="p2" style="display:none;"><img src=“图片1”></p>
<p id="p3" style="display:none;"><img src="图片2" height="320px;"/></p>
<p id="p4" style="display:none;"><img src="图片3"/></p>
</div>
</div>
</body>
<script>
function show(n){
for(var i=1;i<=4;i++){
document.getElementById("tab"+i).style.backgroundColor='green';
document.getElementById("p"+i).style.display='none';
//display实现内容的隐藏与否的控制，当为none是，隐藏
}
document.getElementById("tab"+n).style.backgroundColor='white';
document.getElementById("p"+n).style.display='block';
//当block时，隐藏的即可显示
}
</script>
</html>
