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CSS鼠标悬停菜单图片交换技术实现

实际上，这里的图片在正常使用时完全可以用CSS代码来定义。

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en"> <head> <title>使用图片交换技术制作CSS鼠标悬停菜单</title> <style type="text/css"> div#spritemenu { height: 50px; width: 400px; font-size: 9px; background-image: url(//img.jbzj.com/demoimg/200911/spritemenu.gif); overflow: hidden; } div#spritemenu ul li { display: inline; margin: 0px; padding: 0px; } div#spritemenu ul li a { display: block; position:relative; height: 50px; } div#spritemenu ul li a:hover { background-image: url(//img.jbzj.com/demoimg/200911/spritemenu.gif); } div#spritemenu ul { margin: 0px; padding: 0px; list-style-type:none; height: 50px; } div#spritemenu span { display: none; } div#spritemenu li.buttonA a {top: 0px; left: 0px; width: 80px; background-position: 0px 0px;} div#spritemenu li.buttonB a {top: -50px; left: 82px; width: 64px; background-position: -82px 0px;} div#spritemenu li.buttonC a {top: -100px; left: 148px; width: 76px; background-position: -148px 0px;} div#spritemenu li.buttonD a {top: -150px; left: 226px; width: 70px; background-position: -226px 0px;} div#spritemenu li.buttonE a {top: -200px; left: 298px; width: 102px; background-position: -298px 0px;} div#spritemenu li.buttonA a:hover {background-position: 0px -50px;} div#spritemenu li.buttonB a:hover {background-position: -82px -50px;} div#spritemenu li.buttonC a:hover {background-position: -148px -50px;} div#spritemenu li.buttonD a:hover {background-position: -226px -50px;} div#spritemenu li.buttonE a:hover {background-position: -298px -50px;} </style> </head> <body> <ul> <li class="buttonA">Home</li> <li class="buttonB">About</li> <li class="buttonC">Contact</li> <li class="buttonD">Forum</li> <li class="buttonE">Guestbook</li> </ul> </body> </html>

[Ctrl+A 全选注:引入外部Js需再刷新一下页面才能执行]

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