CSS常用菜单（四）

4、动画菜单

下面我们来实现如下图所示的动画菜单。当鼠标移入到菜单上，以动画的形式出现二级菜单。

html代码：

css代码如下：

html, body, ul, li {padding:0; margin:0;}

body {font:10pt;}

ul,li {list-style-type:none; text-transform:capitalize;}

.clear {clear:both; *display:inline;/*IE only*/}

/*menu*/

#menu {margin:100px auto; display:block; width:1000px; height:34px;}

#nav {display:block;}

#nav .mainlevel {float:left; background:#3f240e; text-align:center; display:block;}

#nav .mainlevel a {color:#fff; text-decoration:none; line-height:34px; height:34px; text-align:center; padding:0 20px; display:block; _width:48px;}

#nav .mainlevel a:hover {color:#3f240e; text-decoration:none; background:#678900 url(images/slide-pannel_14.png) 0 0 repeat-x;}

#nav .mainlevel ul {position:absolute; display:none; *width:2000px;/*IE is great need, width>=li.length*/}

#nav .mainlevel li {float:left; background:#3f240e;}

#nav .mainlevel li a {padding:0 12px; line-height:24px; height:24px; display:block; _padding-bottom:6px;/*IE6 only*/}

#nav .mainlevel li a:hover {color:#3f240e; text-decoration:none; background:#678900 url(images/slide-pannel_14.png) 0 0 repeat-x;}

#nav li a em/*input an em tag as a space*/ {padding:0 3px;}

.note {color:#3f240e; border-right:1px solid #fff; background:#678900 url(images/slide-pannel_14.png) 0 0 repeat-x; display:block; line-height:34px; padding:0 3em;}

.Triangle_con {height:9px; background:url(images/bird.png) 36px 0 no-repeat; display:block; _margin-bottom:-6px;/*IE6 only*/}

.log {margin:100px auto; width:1000px; text-transform:capitalize; line-height:200%;}

使用jquery代码实现动画效果：