<!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>下拉列表 简单</title>
<style type="text/css">
.xianshi {
position: absolute;
left: 0px;
top: 160px;
width: 213px;
height: 44px;
z-index: 2;
line-height: 5px;
border: solid 2px #0066FF;
overflow:visible;
}
.yincang {
position: absolute;
left: 0px;
top: 160px;
width: 213px;
height: 44px;
z-index: 2;
line-height: 5px;
border: solid 2px #0066FF;
overflow:hidden;
}
#apDiv8 {
position: absolute;
left: 213px;
top: -2px;
width: 270px;
height: 355px;
z-index: 3;
border: solid 2px #0066FF;
line-height: 25px;
vertical-align: middle;
}
</style>
</head>
<body>
<div id="apDiv1" align="center" class="yincang" onmouseover="this.className='xianshi'" onmouseout="this.className='yincang'"><h3>首页</h3>
<div id="apDiv2">首页一</div>
</div>
</body>
</html>
