jquery动感漂浮导航菜单代码分享

这是一款基于jquery实现动感漂浮导航菜单的特效代码，菜单可以上下浮动，动感十足，为自己的网站增加了活力，是一款非常实用的导航菜单特效源码。

运行效果图：

为大家分享的jquery动感漂浮导航菜单代码如下

<head>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 <title>jQuery Floating Menu</title>
 <script type="text/javascript" src="js/jquery-1.3.1.min.js"></script>
 <script type="text/javascript" src="js/jquery.easing.1.3.js"></script>
 <script>
 
 $(document).ready(function () {

 //get the default top value
 var top_val = $('#menu li a').css('top');

 //animate the selected menu item
 $('#menu li.selected').children('a').stop().animate({top:0}, {easing: 'easeOutQuad', duration:500}); 

 $('#menu li').hover(
 function () {
 
 //animate the menu item with 0 top value
 $(this).children('a').stop().animate({top:0}, {easing: 'easeOutQuad', duration:500}); 
 },
 function () {

 //set the position to default
 $(this).children('a').stop().animate({top:top_val}, {easing: 'easeOutQuad', duration:500}); 

 //always keep the previously selected item in fixed position 
 $('#menu li.selected').children('a').stop().animate({top:0}, {easing: 'easeOutQuad', duration:500}); 
 } 
 );
 
 });
 
 </script>
 
 <style>
 

 #menu {
 list-style:none; 
 padding:0;
 margin:0 auto;;
 height:70px;
 width:600px;
 }
 
 #menu li {
 float:left;
 width:109px;
 height:inherit;
 position:relative;
 overflow:hidden;
 }

 #menu li a {
 position:absolute;
 top:20px;
 text-indent:-999em;
 background:url(menu.png) no-repeat 0 0;
 display:block; 
 width:109px; 
 height:inherit;

 /* fast png fix for ie6 */
 position:relative;
 behavior: expression((this.runtimeStyle.behavior="none")&&(this.pngSet?this.pngSet=true:(this.nodeName == "IMG" && this.src.toLowerCase().indexOf('.png')>-1?(this.runtimeStyle.backgroundImage = "none",
this.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + this.src + "', sizingMethod='image')",
this.src = "transparent.gif"):(this.origBg = this.origBg? this.origBg :this.currentStyle.backgroundImage.toString().replace('url("','').replace('")',''),
this.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + this.origBg + "', sizingMethod='crop')",
this.runtimeStyle.backgroundImage = "none")),this.pngSet=true));
 }
 
 </style>
 
</head>
<body>
<br/><br/><br/>

<ul id="menu">
 <li><a href="#">Item 1</a></li>
 <li><a href="#">Item 2</a></li>
 <li><a href="#">Item 3</a></li>
 <li><a href="#">Item 4</a></li>
 <li><a href="#">Item 5</a></li>
</ul>
<head>
 <meta http-equiv="Content-Type" content="text/html; charset=utf-8">
 <title>jQuery Floating Menu</title>
 <script type="text/javascript" src="js/jquery-1.3.1.min.js"></script>
 <script type="text/javascript" src="js/jquery.easing.1.3.js"></script>
 <script>
 
 $(document).ready(function () {

 //get the default top value
 var top_val = $('#menu li a').css('top');

 //animate the selected menu item
 $('#menu li.selected').children('a').stop().animate({top:0}, {easing: 'easeOutQuad', duration:500}); 

 $('#menu li').hover(
 function () {
 
 //animate the menu item with 0 top value
 $(this).children('a').stop().animate({top:0}, {easing: 'easeOutQuad', duration:500}); 
 },
 function () {

 //set the position to default
 $(this).children('a').stop().animate({top:top_val}, {easing: 'easeOutQuad', duration:500}); 

 //always keep the previously selected item in fixed position 
 $('#menu li.selected').children('a').stop().animate({top:0}, {easing: 'easeOutQuad', duration:500}); 
 } 
 );
 
 });
 
 </script>
 
 <style>
 

 #menu {
 list-style:none; 
 padding:0;
 margin:0 auto;;
 height:70px;
 width:600px;
 }
 
 #menu li {
 float:left;
 width:109px;
 height:inherit;
 position:relative;
 overflow:hidden;
 }

 #menu li a {
 position:absolute;
 top:20px;
 text-indent:-999em;
 background:url(menu.png) no-repeat 0 0;
 display:block; 
 width:109px; 
 height:inherit;

 /* fast png fix for ie6 */
 position:relative;
 behavior: expression((this.runtimeStyle.behavior="none")&&(this.pngSet?this.pngSet=true:(this.nodeName == "IMG" && this.src.toLowerCase().indexOf('.png')>-1?(this.runtimeStyle.backgroundImage = "none",
this.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + this.src + "', sizingMethod='image')",
this.src = "transparent.gif"):(this.origBg = this.origBg? this.origBg :this.currentStyle.backgroundImage.toString().replace('url("','').replace('")',''),
this.runtimeStyle.filter = "progid:DXImageTransform.Microsoft.AlphaImageLoader(src='" + this.origBg + "', sizingMethod='crop')",
this.runtimeStyle.backgroundImage = "none")),this.pngSet=true));
 }
 
 </style>
 
</head>
<body>
<br/><br/><br/>

<ul id="menu">
 <li><a href="#">Item 1</a></li>
 <li><a href="#">Item 2</a></li>
 <li><a href="#">Item 3</a></li>
 <li><a href="#">Item 4</a></li>
 <li><a href="#">Item 5</a></li>
</ul>

以上就是为大家分享的jquery动感漂浮导航菜单代码，希望大家可以喜欢。