日期:2014-05-17  浏览次数:20578 次

CSS实例(九):多种菜单效果
转自:http://www.jb51.net/article/5959.htm

横向下拉菜单
<!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" lang="zh-CN"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
<meta http-equiv="Content-Language" content="zh-CN" /> 
<title>横向下拉菜单</title> 
<style type="text/css"> 
<!-- 
* {margin:0;padding:0;border:0;} 
body { 
font-family: arial, 宋体, serif; 
font-size:12px; 
} 
#nav { 
height: 24px;  list-style-type: none;  padding-left:200px; 
line-height:24px;overflow:hidden;background:#999; 
} 
#nav a { 
display: block; width: 80px; text-align:center; 
} 
#nav a:link  { 
color:#EEE; text-decoration:none; 
} 
#nav a:visited  { 
color:#EEE;text-decoration:none; 
} 
#nav a:hover  { 
color:#FFF;text-decoration:none;font-weight:bold;background:#CCC; 
} 
#nav li { 
float: left; width: 80px; 
} 
#nav li ul { 
line-height: 24px; 
list-style-type: none; 
text-align:left; 
left: -999px; 
width: 520px; //注意,这里一定要设置宽度; 
position: absolute; 
background:#CCC; 
} 
#nav li ul li{ 
float: left;width: 80px; //float就是子菜单横向的关键,可以继承父菜单而省略float 
} 
#nav li ul a{ 
display: block; width: 65px;text-align:left;padding-left:15px; 
} 
#nav li ul a:link  { 
color:#F1F1F1; text-decoration:none; 
} 
#nav li ul a:visited  { 
color:#F1F1F1;text-decoration:none; 
} 
#nav li ul a:hover  { 
color:#FFF;text-decoration:none;font-weight:normal;background:#C00; 
} 
#nav li:hover ul { 
left:25%; 
} 
#nav li.sfhover ul { 
left:25%; 
} 
#content { 
clear: left; 
} 
--> 
</style> 
<script type=text/javascript><!--//--><![CDATA[//><!-- 
function menuFix() { 
var sfEls = document.getElementById("nav").getElementsByTagName("li"); 
for (var i=0; i<sfEls.length; i++) { 
sfEls[i].onmouseover=function() { 
this.className+=(this.className.length>0? " ": "") + "sfhover"; 
} 
sfEls[i].onMouseDown=function() { 
this.className+=(this.className.length>0? " ": "") + "sfhover"; 
} 
sfEls[i].onMouseUp=function() { 
this.className+=(this.className.length>0? " ": "") + "sfhover"; 
} 
sfEls[i].onmouseout=function() { 
this.className=this.className.replace(new RegExp("( ?|^)sfhover\\b"), 
""); 
} 
} 
} 
window.onload=menuFix; 
//--><!]]></script> 
</head> 
<body> 
<ul id="nav"> 
<li><a href="#">菜单一</a> 
<ul> 
<li><a href="#">菜单一</a></li> 
<li><a href="#">菜单一</a></li> 
<li><a href="#">菜单一</a></li> 
<li><a href="#">菜单一</a></li> 
<li><a href="#">菜单一</a></li> 
<li><a href="#">菜单一</a></li> 
</ul> 
</li> 
<li><a href="#">菜单二</a> 
<ul> 
<li><a href="#">菜单二</a></li> 
<li><a href="#">菜单二</a></li> 
<li><a href="#">菜单二</a></li> 
<li><a href="#">菜单二</a></li> 
<li><a href="#">菜单二</a></li> 
</ul> 
</li> 
<li><a href="#">菜单三</a> 
<ul> 
<li><a href="#">菜单三</a></li> 
<li><a href="#">菜单三</a></li> 
<li><a href="#">菜单三</a></li> 
<li><a href="#">菜单三</a></li> 
<li><a href="#">菜单三</a></li> 
</ul> 
</li> 
<li><a href="#">菜单四</a> 
<ul> 
<li><a href="#">菜单四</a></li> 
<li><a href="#">菜单四</a></li> 
<li><a href="#">菜单四</a></li> 
<li><a href="#">菜单四</a></li> 
<li><a href="#">菜单四</a></li> 
</ul> 
</li> 
<li><a href="#">菜单五</a&g