在线体验效果：http://hovertree.com/texiao/jquery/1.htm
以下是完整源代码：
<!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>jQuery实现鼠标经过图片变亮效果 - 何问起</title><base target="_blank" /> <style type="text/css"> a {color:white;} body{background:#000;} body,div,ul,li,img{padding:0;margin:0; border:0; list-style:none;} .hovertreebox{width:630px; border:1px solid #ccc; margin:10px auto; overflow:hidden; padding:10px 0 0 10px;} .hovertreebox li{width:200px; height:186px; float:left; margin-right:10px; margin-bottom:10px; cursor:pointer;} </style> <script type="text/javascript" src="http://keleyi.com/keleyi/pmedia/jquery/jquery-1.11.2.min.js"></script> <script type="text/javascript"> $(function(){ $('.hovertreebox li').mouseover(function (e) { $(this).siblings().stop().fadeTo(500,0.4); }); $('.hover'+'treebox li').mouseout(function (e) { $(this).siblings().stop().fadeTo(500,1); }); }) </script> </head> <body> <div style="color:white">jQuery突出图片列表中鼠标经过项 <br /><a href="http://hovertree.com">首页</a> <a href="http://hovertree.com/hvtart/bjae/7f408b3a6bf8a433.htm">原文</a> <a href="http://hovertree.com/texiao/">更多特效</a></div> <div class="hovertreebox" id="hovertreelist"> <ul> <li><img src="http://hovertree.com/texiao/jquery/1/images/01.jpg" width="200" height="186" /></li> <li><img src="http://hovertree.com/texiao/jquery/1/images/02.jpg" width="200" height="186" /></li> <li><img src="http://hovertree.com/texiao/jquery/1/images/03.jpg" width="200" height="186" /></li> <li><img src="http://hovertree.com/texiao/jquery/1/images/04.jpg" width="200" height="186" /></li> <li><img src="http://hovertree.com/texiao/jquery/1/images/05.jpg" width="200" height="186" /></li> <li><img src="http://hovertree.com/texiao/jquery/1/images/06.jpg" width="200" height="186" /></li> </ul> </div> <div style="text-align:center;margin:50px 0; font:normal 14px/24px 'MicroSoft YaHei';color:white;"> <p>适用浏览器：IE8、360、FireFox、Chrome、Safari、Opera、傲游、搜狗、世界之窗.</p> <p>来源：<a href="http://hovertree.com/" target="_blank">HoverTree</a></p> </div> </body> </html>