关于UL和LI的css问题
<html>
<head>
<style type="text/css">
.nav{ width:980px; height:32px; margin:0 auto; position: relative;z-index: 100; }
.nav ul{ padding-left:10px; }
.nav ul ul{ padding-left:0px; border:1px solid #CCC; }
.nav li { float: left;position: relative;}
.nav ul ul { visibility: hidden;position: absolute;left: 0px;top: 32px;list-style-type: none}
.nav table {position: absolute;top: 0;left: 0;}
.nav ul li:hover ul,
.nav ul a:hover ul{visibility: visible;}
.nav a{display: block; width:90px; height:32px; line-height:32px; text-align:center;
color: #003366;text-decoration: none; font-weight:bold;}
.nav a:hover{ color: #990000; text-decoration:none; }
.nav ul ul li {clear:both;text-align:left; font-size:12px; }
.nav ul ul li a{display: block; width:100px;height:22px; line-height:22px;font-weight:normal;
text-align:left; padding-left:10px; background-color:#F9F9F9;border:2px solid #F9F9F9; }
.nav ul ul li a:hover{ border:2px solid #F9F9F9; background: #003366; color:#EEE; }
}
</style>
</head>
<body>
<div class="nav">
<ul>
<li>
<a href="javascript::void(0)">案例管理<!--[if IE 7]><!--></a><!--<![endif]-->
<!--[if lte IE 6]><table><tr><td><![endif]-->
<ul>
<li><a href="__APP__/Case/add">添加网站案例</a></li>
<li><a href="__APP__/Case">网站案例</a></li>
</ul>
<!--[if lte IE 6]></td></tr></table></a><![endif]-->
</li>
</ul>
</div>
</body>
</html>
我要的效果是鼠标移到案例管理的时候,下面的子档是水平排列,而不是垂直排列,谁帮我一下解决一下。。谢谢。。