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jquery写的漂亮的二级下拉菜单代码

时间：2013-08-26 07:19 来源：互联网作者：源码搜藏收藏推荐

<!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>jQuery二级菜单</title>
<script type="text/javascript" src="http://www.codefans.net/ajaxjs/jquery1.3.2.js"></script> 
<script type="text/javascript"> 
$(document).ready(function(){
	$("ul.subnav").parent().append("<span></span>");
	$("ul.topnav li span").click(function() {
		$(this).parent().find("ul.subnav").slideDown('fast').show();
		$(this).parent().hover(function() {
		}, function(){	
			$(this).parent().find("ul.subnav").slideUp('slow');
		});
		}).hover(function() { 
			$(this).addClass("subhover");
		}, function(){
			$(this).removeClass("subhover");
	});
});
</script>
<style type="text/css">
body {
	margin: 0; padding: 0;
	font: 10px normal Arial, Helvetica, sans-serif;
	background: #ddd url(http://www.codefans.net/jscss/demoimg/201308/body_bg.gif) repeat-x;
}
.container {
	width: 960px;
	margin: 0 auto;
	position: relative;
}
#header {
	padding-top: 120px;
}
#header .disclaimer {
	color: #999;
	padding: 100px 0 7px 0;
	text-align: right;
	display: block;
	position: absolute;
	top: 0; right: 0;
}
#header .disclaimer a {	color: #ccc;}
ul.topnav {
	list-style: none;
	padding: 0 20px;	
	margin: 0;
	float: left;
	width: 920px;
	background: #222;
	font-size: 1.2em;
	background: url(http://www.codefans.net/jscss/demoimg/201308/topnav_bg.gif) repeat-x;
}
ul.topnav li {
	float: left;
	margin: 0;	
	padding: 0 15px 0 0;
	position: relative;
}
ul.topnav li a{
	padding: 10px 5px;
	color: #fff;
	display: block;
	text-decoration: none;
	float: left;
}
ul.topnav li a:hover{
	background: url(http://www.codefans.net/jscss/demoimg/201308/topnav_hover.gif) no-repeat center top;
}
ul.topnav li span {
	width: 17px;
	height: 35px;
	float: left;
	background: url(http://www.codefans.net/jscss/demoimg/201308/subnav_btn.gif) no-repeat center top;
}
ul.topnav li span.subhover {background-position: center bottom; cursor: pointer;}
ul.topnav li ul.subnav {
	list-style: none;
	position: absolute;
	left: 0; top: 35px;
	background: #333;
	margin: 0; padding: 0;
	display: none;
	float: left;
	width: 170px;
	-moz-border-radius-bottomleft: 5px;
	-moz-border-radius-bottomright: 5px;
	-webkit-border-bottom-left-radius: 5px;
	-webkit-border-bottom-right-radius: 5px;
	border: 1px solid #111;
}
ul.topnav li ul.subnav li{
	margin: 0; padding: 0;
	border-top: 1px solid #252525;
	border-bottom: 1px solid #444;
	clear: both;
	width: 170px;
}
html ul.topnav li ul.subnav li a {
	float: left;
	width: 145px;
	background: #333 url(http://www.codefans.net/jscss/demoimg/201308/dropdown_linkbg.gif) no-repeat 10px center;
	padding-left: 20px;
}
html ul.topnav li ul.subnav li a:hover {
	background: #222 url(http://www.codefans.net/jscss/demoimg/201308/dropdown_linkbg.gif) no-repeat 10px center; 
}
#header img {
	margin: 20px 0 10px;
}
</style>
</head>
<body>
<div class="container">
    <div id="header">
        <ul class="topnav">
            <li><a href="/">网站首页</a></li>
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