jQuery插件****下拉菜单   快速 简洁

开源地址：https://github.com/kamens/jQuery-menu-aim

**下载地址：**最下面

用法：

<script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>
<script type="text/javascript" src="jquery.menu-aim.js" ></script>
<script type="text/javascript" >
$(function(){
    $("#G_chan-panel").menuAim({
    activate: function(a){$(a).addClass("active")},  
    deactivate: function(a){$(a).removeClass("active")}, 
     enter: function(a) {$(a).addClass("active")},
      exit: function(a) {$(a).removeClass("active")},
});
});
</script>

HTML:

<div id="menu">
  <ul id="G_chan-panel" class="pop-panel pp_channels Fix" style="position: absolute; visibility: visible; z-index: 1001; top: 175px; left: 189px; ">
    <li class="root-item  "> <a href="#" class="root-name"><span>餐饮</span></a>
      <ul class="pop-panel Fix sub-list">
        <li class="main-cate"><a href="#">餐饮频道</a></li>
        <li><a href="#">粤菜</a></li>
        <li><a href="#">粤2菜</a></li>
        <li><a href="#">粤菜3</a></li>
        <li><a href="#">粤菜4</a></li>
      </ul>
    </li>
    <li class="root-item"> <a href="#" class="root-name"><span>购物</span></a>
      <ul class="pop-panel Fix sub-list">
        <li class="main-cate"><a href="#">购物频道</a></li>
        <li><a href="#">超市/便利店</a></li>
        <li><a href="#">超市2菜</a></li>
        <li><a href="#">超市3</a></li>
        <li><a href="#">超市4</a></li>
        <li><a href="#">其他</a></li>
      </ul>
    </li>
  </ul>
</div>

**样式：

**

<style type="text/css">
BODY {
	background-color: #fff;
	color: #555;
	font: 9pt/14px Tahoma, "宋体", Arial, Helvetica, Sans-Serif;
	letter-spacing: 0;
	margin: 0;
}
html, body, ul, ol, li, dl, dt, dd, p, h1, h2, h3, h4, h5, h6, a, img, th, td, form, fieldset, iframe, object, pre, code, legend, blockquote {
	border: 0 none;
	margin: 0;
	outline: 0 none;
	padding: 0;
}
h1, h2, h3, h4, h5, h6 {
	font-size: 100%;
	font-weight: normal;
}
UL, LI {
	list-style: none outside none;
	margin: 0;
	padding: 0;
}
IMG {
	border: medium none;
	margin: 0;
	padding: 0;
	cursor: pointer;
}
input, img, select {
	vertical-align: middle;
}
A {
	color: #666666;
}
A:link {
	color: #666666;
	text-decoration: none;
}
A:visited {
	color: #666666;
	text-decoration: none;
}
A:hover {
	color: #C90809;
	text-decoration: none;
}
/*导航*/

.pp_channels .root-item, .pp_channels .root-name, .pp_channels .root-name span, .pp_channels .sub-list li a {
/* background-image: url("bg.png");
    background-repeat: no-repeat;*/
}
.G_chan-panel {
	position: absolute;
	z-index: 1000;
	top: 120px;
	left: 199px;
	visibility: hidden;
}
.pp_channels {
	width: 138px;
	padding: 0;
	border-width: 0 0 2px 1px;
	border-radius: 5px;
	-webkit-border-radius: 5px;
	-moz-border-radius: 5px;
	-moz-box-shadow: -1px 1px 1px #ccc;
	-webkit-box-shadow: 0 1px 5px #ccc;
	box-shadow: 0 1px 5px #ccc;
}
.pp_channels .root-item {
	zoom: 1;
	position: relative;
	width: 139px;
	height: 34px;
	background-position: -13px -373px;
	overflow: visible;
	vertical-align: middle;
}
.pp_channels .root-name {
	display: block;
	z-index: 1001;
	position: relative;
	border-top: 1px solid #B9F5D2;
	padding-left: 10px;
	background-position: -10px -358px;
	cursor: pointer;
}
.pp_channels .root-name span {
	display: block;
	border-right: 1px solid #B9F5D2;
	padding-left: 9px;
	height: 34px;
	font-size: 1.2em;
	line-height: 34px;
	color: #000;
	background-position: -167px -358px;
}
.pp_channels .active .root-name {
	background: #fff;
}
.pp_channels .active .root-name span {
	color: #C00;
	border-color: #fff;
}
.pp_channels .no-sub .root-name span {
	border-color: #fff;
	background-position: 20px -358px;
}
.pp_channels .sub-list {
	left: 138px;
	top: -34px;
	padding: 5px 2px 5px 16px;
	width: 200px;
	overflow: hidden;
	_top: -35px;
	-moz-box-shadow: -1px 1px 1px #ccc;
	-webkit-box-shadow: 0 1px 5px #ccc;
	box-shadow: 0 1px 5px #ccc;
}
.pp_channels .active .sub-list {
	visibility: visible;
}
.pp_channels .sub-list li {
	float: left;
	width: 83px;
	margin: 0 10px 5px 0;
}
.pp_channels .sub-list .main-cate {
	width: 200px;
	margin-right: -10px;
	font-weight: bold;
}
.pp_channels .sub-list a {
	padding-left: 3px;
	line-height: 21px;
	background-position: -169px -418px;
 *background-position: -169px -420px;
}
.pp_channels .sub-list a: hover {
	background-position: -169px -438px;
 *background-position: -169px -440px;
}
.pop-panel {
	z-index: 1000;
	position: absolute;
	visibility: hidden;
	border: 1px solid #B9F5D2;
	padding: 5px 9px;
	background: #fff;
	color: #61646E;
 #margin-left:-0px;
	_margin-left: -0px;
}
.pop-panel a {
	color: #61646E;
}
.pop-panel a: hover {
	text-decoration: none;
	color: #C00;
}
</style>

下载地址： [jQuery-menu-aim 例子](https://files.cnblogs.com/zengxiangzhan/jQuery-menu-aim-master.rar)