几种css横向和纵向导航？
横向：
<!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>
<title></title>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<style>
#nav { height:26px; border-bottom:2px solid #2788da; list-style:none;}
#nav li { float:left;}
#nav li a { color:#000000; text-decoration:none; padding-top:4px; display:block; width:120px; height:22px; text-align:center; background-color:#ececec; margin-left:2px;}
#nav li a:hover { background-color:#bbbbbb; color:#ffffff;}
#nav li a#current { background-color:#2788da; color:#fff;}
</style>
</head>
<body>
<ul >CSS2.0实用手册</a></li>
</ul>
</body>
</html>
纵向：<!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=gb2312" />
<title>纵向导航菜单</title>
<style>
#nav { width:100px; border-color:#c5c6c4; border-style:solid; border-width:0px 1px 1px 1px;}
#nav h1 { margin:0px; padding:4px; font-size:12px; font-weight:bold; font-family:Verdana; border-top:1px solid #c5c6c4; background-color:#CCCCCC;}
#nav h2 { margin:0px; padding:4px; font-size:12px; font-family:Verdana; font-weight:normal;}
#nav h2 a { color:#666666; text-decoration:none;}
#nav h2 a:hover { color:#999999; text-decoration:underline;}
</style>
</head>
<body>
<div >交流论坛</a></h2>
</div>
</body>
</html>
下拉：
<!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=gb2312" />
<title>下拉及多级弹出式菜单www.aa25.cn</title>
<script type="text/javascript"><!--//--><![CDATA[//><!--
startList = function() {
if (document.all&&document.getElementById) {
navRoot = document.getElementById("nav");
for (i=0; i<navRoot.childNodes.length; i++) {
node = navRoot.childNodes[i];
if (node.nodeName=="LI") {
node.onmouseover=function() {
this.className+=" over";
}
node.onmouseout=function() {
this.className=this.className.replace(" over", "");
}
}
}
}
}
window.onload=startList;
//--><!]]></script>
<style>
ul { padding:0; margin:0; list-style:none;}
li { float:left; width:100px;}
ul li a { display:block; font-size:12px; border:1px solid #ccc; margin-top:2px; margin-left:3px; padding:3px; text-decoration:none; color:#777;}
ul li a:hover { background-color:#ddd;}
li ul { display:none; top:20px;}
li:hover ul,li.over ul { display:block;}
</style>
</head>
<body>
<ul >电影原声</a></li>
</ul>
</body>
</html>
