<!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>二级下滑导菜单</title>
<script type="text/javascript" src="https://www.linuxidc.com/jquery.js"></script>
<script type="text/javascript" src="https://www.linuxidc.com/jquery.effects.core.min.js"></script>
<style type="text/css">
body{ font-size:12px; font-family:Arial, Helvetica, sans-serif; margin:0; padding:10px;}
.nav_list{ list-style:none; margin:0; padding:0;}
.nav_list li{ float:left; text-align:center; margin-right:10px; position:relative;}
.nav_list li a{ width:80px; text-align:center; padding:4px 0; text-decoration:none;color:#ccc; background:#996666; display:block; float:left;}
.nav_list li a.current{ width:80px; text-align:center; padding:4px 0; text-decoration:none;color:#fff; background:#f00; display:block; float:left;}
.nav_list li div.second{ color:#999999; height:0px; overflow:hidden; position:absolute; left:0; top:22px; width:80px;}
.nav_list li div.second a{ background:#666666; color:#fff; border:none; width:80px; border-top:1px solid
#FFFFFF; padding:5px 0;}
</style>
<script type="text/javascript">
$(function(){
Menu(".nav_list");
});
function Menu(ul_class_name){
Second(".nav_list");
var li_name = ul_class_name+" "+"li";
$("div.second").css("opacity","0.1");
$(li_name).hover(
function(){
var a_height = $(this).children("div.second a:first").css("height");
var a_count = $(this).children("div.second").children("a").length;
var slide_hieght = (parseInt(a_height)+11)*a_count;
$(this).children("div.second").stop().animate({height:slide_hieght+"px",opacity:"0.9"},600);
$(this).children("a:not(.current)").stop().animate({backgroundColor:"#f00",color:"#fff"},800);
},function(){
$(this).children("div.second").stop().animate({height:"0px",opacity:"0.1"},600);
$(this).children("a:not(.current)").stop().animate({backgroundColor:"#996666",color:"#ccc"},800);
});
}
function Second(ul_class_name){
var second_menu = ul_class_name+" "+"li"+" "+"div.second"+" "+">"+" "+"a";
$(second_menu).hover(
function(){
$(this).stop().animate({backgroundColor:"#000",opacity:"1"},400);
},function(){
$(this).stop().animate({backgroundColor:"#666",opacity:"0.9"},400);
});
}
</script>
</head>
<body>
<ul>
<li>
<a href="#">Test_1</a>
<div>
<a href="#">menu_1</a>
<a href="#">menu_1</a>
<a href="#">menu_1</a>
</div>
<li>
<li>
<a href="#">Test_2</a>
<div>
<a href="#">menu_1</a>
<a href="#">menu_1</a>
<a href="#">menu_1</a>
<a href="#">menu_1</a>
<a href="#">menu_1</a>
<a href="#">menu_1</a>
<a href="#">menu_1</a>
<a href="#">menu_1</a>
</div>
<li>
<li>
<a href="#">Test_3</a>
<div>
<a href="#">menu_3</a>
<a href="#">menu_3</a>
<a href="#">menu_3</a>
<a href="#">menu_3</a>
<a href="#">menu_3</a>
<a href="#">menu_3</a>
<a href="#">menu_3</a>
<a href="#">menu_3</a>
<a href="#">menu_3</a>
<a href="#">menu_3</a>
<a href="#">menu_3</a>
<a href="#">menu_3</a>
</div>
<li>
<li>
<a href="#">Test_4</a>
<div>
<a href="#">menu_4</a>
<a href="#">menu_4</a>
<a href="#">menu_4</a>
</div>
<li>
<li>
<a href="#">Test_5</a>
<div>
<a href="#">menu_5</a>
<a href="#">menu_5</a>
<a href="#">menu_5</a>
</div>
<li>