导航 Jquery
<!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=utf-8" />
<title>弹出下拉菜单插件弹出层相对于自身的父层 </title>
<meta name="keywords" content="下拉菜单代码,导航条代码,css导航菜单,导航菜单代码" />
<meta name="description" content="为您提供-下拉菜单代码，css导航菜单代码，导航条代码，下拉菜单和下拉菜单代码。" />
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script type="text/javascript">
$(document).ready(function(){
var lr_systembtn = $("#lr_systembtn");
var lr_menu = $("#lr_menu");
lr_systembtn.mouseenter(function(){
t_delay= setTimeout(function(){
lr_menu.fadeIn("slow");
},200);
});
lr_systembtn.mouseleave(function(){
clearTimeout(t_delay);
lr_menu.fadeOut("slow");
});
});
</script>
<style>
body{font-size:13px; font-family:"宋体"; color:#333333;}
a{text-decoration: none; color:#333333; font-size:13px; font-family:"宋体";white-space:nowrap; overflow:hidden;}
a:hover{color:#FB3822;}
body,dl,dt,dd{ padding:0px; margin:0px;}
#lr_systembox{ width:980px; height:50px; background-color:#CCC; position:relative; margin:0 auto; z-index:100000;}
.lr_systembtn{ width:201px; height:35px; line-height:33px;position:absolute; top:0px; right:0px; z-index:100004;}
.lr_systembtn .lr_abtn{ width:100%; height:35px; display:block; font-size:15px; font-weight:bold;color:#666666;
background-image: url(lr_images/btn_system.png);background-repeat:no-repeat;background-position:left top;}
.lr_systembtn .lr_abtn:hover{color:#333333;background-position:left bottom;}
.lr_systembtn .lr_abtn span{ padding-left:28px;}
.lr_menu{ width:184px; padding:8px 6px 8px 6px; background-color:#ffffff; border:#ACACAC solid 2px;filter:alpha(opacity=90);opacity: 0.90;
position:absolute; top:35px; right:0px; z-index:100005;display:none;}
.lr_menu dl{width:100%; display:block; overflow:hidden;}
.lr_menu a{ width:100%;display:block; color:#666666;border-bottom:#ACACAC dashed 1px;height:30px; line-height:30px; font-size:14px;
background-image: url(lr_images/jt1.gif);background-repeat:no-repeat;background-position:6px center;}
.lr_menu a:hover{background-color:#E2E2E2; color:#333333; text-decoration:none;}
.lr_menu dt{}
.lr_menu dt a{font-weight:bold;text-indent:14px;}
.lr_menu dd a{text-indent:24px;background-position:16px center;}
</style>
</head>
<body>
<div id="lr_systembox">
<div id="lr_systembtn" class="lr_systembtn">
<a href="#" class="lr_abtn"><span>小未为您提供</span></a>
<div id="lr_menu" class="lr_menu">
<dl>
<dt><a href="http://www.51xuediannao.com/js/" target="_blank">jquery特效</a></dt>
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<dt><a href="http://www.51xuediannao.com/js/nav/" target="_blank">导航菜单</a></dt>
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<dd><a href="#" target="_blank">三级菜单测试</a></dd>
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