基于jquery平滑二级下拉菜单效果

作者：简简单单 2013-08-12

提示：您可以先修改部分代码再运行

<!DOCTYPE html>
<head>
<title>jquery平滑二级下拉菜单</title>
<style>
h1, h2, h3, h4, p, li, li a{font-family: Arial, Sans-Serif;font-size: 15px;font-weight:

bold;color: #525252;text-decoration: none;}
h1, h2, h3, h4{font-size: 22px;}
#dropdown_nav{padding: 0px;display: inline-block;list-style: none;-moz-box-

shadow: inset 0px 0px 1px #fff;-webkit-box-shadow: inset 0px 0px 1px #fff;border: 1px solid

#ccc;-moz-border-radius: 5px;-webkit-border-radius: 5px;background: #e2e2e2;background: -

moz-linear-gradient(#f3f3f3, #e2e2e2);background: -webkit-gradient(linear, 0 0, 0 100%,

from(#f3f3f3), to(#e2e2e2));}
#dropdown_nav li{padding: 10px 0px 10px 0px;float: left;position: relative;display: inline

-block;}
#dropdown_nav li a{padding: 10px 15px 10px 15px;text-shadow: -1px 1px 0px #f6f6f6;-moz-box

-shadow: inset 0px 0px 1px #fff;-webkit-box-shadow: inset 0px 0px 1px #fff;border-right:

1px solid #ccc;}
#dropdown_nav li a: hover{background: #f9f9f9;background: -moz-linear-gradient(#f9f9f9,

#e8e8e8);background: -webkit-gradient(linear, 0 0, 0 100%, from(#f9f9f9), to(#e8e8e8));}
#dropdown_nav li a: active{background: #e2e2e2;background: -moz-linear-gradient(#e2e2e2,

#f3f3f3);background: -webkit-gradient(linear, 0 0, 0 100%, from(#e2e2e2), to(#f3f3f3));}
#dropdown_nav li a.first{-moz-border-radius: 5px 0px 0px 5px;-webkit-border-radius: 5px 0px

0px 5px;}
#dropdown_nav .sub_nav{padding: 0px;position: absolute;top: 38px;left:

0px;border: 1px solid #ccc;background: #e2e2e2;}
#dropdown_nav .sub_nav li{padding: 0px;}
#dropdown_nav .sub_nav li a{display: block;border-bottom: 1px solid #ccc;background: -moz-

linear-gradient(#f3f3f3, #e2e2e2);background: -webkit-gradient(linear, 0 0, 0 100%, from

(#f3f3f3), to(#e2e2e2));}
#dropdown_nav .sub_nav li a: hover{background: #f9f9f9;background: -moz-linear-gradient

(#f9f9f9, #e8e8e8);background: -webkit-gradient(linear, 0 0, 0 100%, from(#f9f9f9), to

(#e8e8e8));}
#dropdown_nav .sub_nav li a: active{background: #e2e2e2;background: -moz-linear-gradient

(#e2e2e2, #f3f3f3);background: -webkit-gradient(linear, 0 0, 0 100%, from(#e2e2e2), to

(#f3f3f3));}
</style>
<script type="text/javascript" src="http://www.codefans.net/ajaxjs/jquery-

1.6.2.min.js"></script>
<script type="text/javascript">
		$(function() {
			//We initially hide the all dropdown menus
			$('#dropdown_nav li').find('.sub_nav').hide();
			//When hovering over the main nav link we find the dropdown menu to

the corresponding link.
			$('#dropdown_nav li').hover(function() {
				//Find a child of 'this' with a class of .sub_nav and make

the beauty fadeIn.
				$(this).find('.sub_nav').fadeIn(100);
			}, function() {
				//Do the same again, only fadeOut this time.
				$(this).find('.sub_nav').fadeOut(50);
			});
		});
	</script>
</head>
<body>
	<h2>Creating an Awesome Drop-Down Nav with CSS3 & jQuery</h2>
	<ul id="dropdown_nav">
		<li><a class="first" href="#">Home</a></li>
		<li><a href="#">ASP源码下载</a>
			<ul class="sub_nav">
				<li><a href="#">新闻类</a></li>
				<li><a href="#">论坛类</a></li>
				<li><a href="#">企业类</a></li>
			</ul>
		</li>
		<li><a href="#">技术文章</a>
			<ul class="sub_nav">
				<li><a href="#">ASP</a></li>
				<li><a href="#">php</a></li>
				<li><a href="#">jquery</a></li>
				<li><a href="#">Ajax</a></li>
			</ul>
		</li>
		<li><a href="#">Freebies</a>
		</li>
		<li><a class="last" href="#">网页特效</a>
			<ul class="sub_nav">
				<li><a href="#">导航菜单</a></li>
				<li><a href="#">CSS布局</a></li>
				<li><a href="#">鼠标特效</a></li>
			</ul>
		</li>
	</ul><br />
</body>
</html></td>
	  </tr>
	</table>

提示：您可以先修改部分代码再运行

基于jquery平滑二级下拉菜单效果

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