本文章收藏了三款css横向二级菜单效果代码，有是纯css二级菜单也有利用js div 实现的超漂亮的下拉菜单代码。
代码如下
复制代码
<!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 runat="server">
<title>网页特效下拉菜单</title>
<style type="text/css">
* {
padding:0;
margin:0;
}
body {
font-family:verdana, sans-serif;
font-size:small;
}
#navigation, #navigation li ul {
list-style-type:none;
}
#navigation {
margin:20px;
}
#navigation li {
float:left;
text-align:center;
position:relative;
}
#navigation li a:link, #navigation li a:visited {
display:block;
text-decoration:none;
color:#000;
width:120px;
height:40px;
line-height:40px;
border:1px solid #fff;
border-width:1px 1px 0 0;
background:#c5dbf2;
padding-left:10px;
}
#navigation li a:hover {
color:#fff;
background:#2687eb;
}
#navigation li ul li a:hover {
color:#fff;
background:#6b839c;
}
#navigation li ul {
display:none;
position:absolute;
top:40px;
left:0;
margin-top:1px;
width:120px;
}
#navigation li ul li ul {
display:none;
position:absolute;
top:0px;
left:130px;
margin-top:0;
margin-left:1px;
width:120px;
}
</style>
<script type="text/javascript">
function displaysubmenu(li) {
var submenu = li.getelementsbytagname("ul")[0];
submenu.style.display = "block";
}
function hidesubmenu(li) {
var submenu = li.getelementsbytagname("ul")[0];
submenu.style.display = "none";
}
</script>
</head>
<body>
<ul id="navigation">
<li onmouseo教程ver="displaysubmenu(this)" onmouseout="hidesubmenu(this)">
<a href="#">栏目1</a>
<ul>
<li><a href="#">栏目1->菜单1</a></li>
<li><a href="#">栏目1->菜单2</a></li>
<li><a href="#">栏目1->菜单3</a></li>
<li><a href="#">栏目1->菜单4</a></li>
</ul>
</li>
<li onmouseover="displaysubmenu(this)" onmouseout="hidesubmenu(this)">
<a href="#">栏目2</a>
<ul>
<li><a href="#">栏目2->菜单1</a></li>
<li><a href="#">栏目2->菜单2</a></li>
<li><a href="#">栏目2->菜单3</a></li>
<li><a href="#">栏目2->菜单4</a></li>
<li><a href="#">栏目2->菜单5</a></li>
</ul>
</li>
<li onmouseover="displaysubmenu(this)" onmouseout="hidesubmenu(this)">
<a href="#">栏目3</a>
<ul>
<li onmouseover="displaysubmenu(this)" onmouseout="hidesubmenu(this)">
<a href="#">栏目3->菜单1</a>
<ul>
<li><a href="#">菜单1->子菜单1</a></li>
<li><a href="#">菜单1->子菜单2</a></li>
<li><a href="#">菜单1->子菜单3</a></li>
<li><a href="#">菜单1->子菜单4</a></li>
</ul>
</li>
<li><a href="#">栏目3->菜单2</a></li>
<li onmouseover="displaysubmenu(this)" onmouseout="hidesubmenu(this)">
<a href="#">栏目3->菜单3</a>
<ul>
<li><a href="#">菜单3->子菜单1</a></li>
<li><a href="#">菜单3->子菜单2</a></li>
<li><a href="#">菜单3->子菜单3</a></li>
</ul>
</li>
</ul>
</li>
</ul>
</body>
</html>
第二款兼容主浏览器
代码如下
复制代码
<!doctype html public "-//w3c//dtd xhtml 1.0 transitional//en" "http://www.w3.org/tr/xhtml1/dtd/xhtml1-transitional.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<title>纯css的下拉菜单支持ie6ie7firefox</title>
<style type="text/css">
*{margin:0;padding:0;}
.menu{font-size:12px;position:relative;z-index:100;}
.menu li {float:left;position:relative;list-style:none;}
.menu ul ul {visibility:hidden;position:absolute;left:0px;top:32px;}
.menu table {position:absolute;top:0;left:0;}
.menu ul li:hover ul,
.menu ul a:hover ul{visibility:visible;}
.menu a{display:block;background:#0c3;color:#fff;text-decoration:none;height:32px;line-height:32px;width:100px;text-align:center;font-weight:bold;}
.menu a:hover{background:#fc0;color:#09c;}
.menu ul ul{}
.menu ul ul li {clear:both;text-align:left;}
.menu ul ul li a{display:block;width:100px;height:32px;margin:0;border:0;border-bottom:1px solid #390;}
.menu ul ul li a:hover{background:#fc0;}
</style>
</head>
<body>
<div class="menu">
<ul>
<li><a href="">menu1
<!--[if ie 7]><!--></a><!--<![endif]-->
<!--[if lte ie 6]><table><tr><td><![endif]-->
<ul>
<li><a href="">sub menu1.1</a></li>
<li><a href="">sub menu1.2</a></li>
</ul>
<!--[if lte ie 6]></td></tr></table></a><![endif]-->
</li>
<li><a href="">menu2
<!--[if ie 7]><!--></a><!--<![endif]-->
<!--[if lte ie 6]><table><tr><td><![endif]-->
<ul>
<li><a href="">sub menu2.1</a></li>
<li><a href="">sub menu2.2</a></li>
</ul>
<!--[if lte ie 6]></td></tr></table></a><![endif]-->
</li>
<li><a href="">menu3
<!--[if ie 7]><!--></a><!--<![endif]-->
<!--[if lte ie 6]><table><tr><td><![endif]-->
<ul>
<li><a href="">sub menu3.1</a></li>
<li><a href="">sub menu3.2</a></li>
</ul>
<!--[if lte ie 6]></td></tr></table></a><![endif]-->
</li>
<li><a href="">menu4</a></li>
</ul>
</div>
</body>
</html>
导航菜单三
<!doctype html public "-//w3c//dtd xhtml 1.0 strict//en"
"http://www.w3.org/tr/xhtml1/dtd/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<title>二级横向菜单</title>
<meta http-equiv="content-type" content="text/html; charset=utf-8" />
<script type="text/javascript">
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>
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