jQuery实现鼠标经过图片变亮其他变暗效果

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</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="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 /></div>

<div class="hovertreebox" id="hovertreelist">

<ul>

<li><img src="/images/01.jpg" width="200" height="186" /></li>

<li><img src="/images/02.jpg" width="200" height="186" /></li>

<li><img src="/images/03.jpg" width="200" height="186" /></li>

<li><img src="/images/04.jpg" width="200" height="186" /></li>

<li><img src="/images/05.jpg" width="200" height="186" /></li>

<li><img src="/images/06.jpg" width="200" height="186" /></li>

</ul>

</div>

</body>

</html>