使用CSS实现圈人效果(CSS Sprites)
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=utf-8">
<title> css sprites </title>
<style type="text/css">
body{font-size:14px;}
#imgmap{position:relative; width:350px; height:263px; background:url('office.jpg') no-repeat;}
#imgmap .map{position:absolute;}
#imgmap .map span{font-weight:bold; color:#000000; padding:3px; background:#FFFFFF; border:1px solid #CCCCCC;}
#imgmap #d1{top:55px; left:109px;}
#imgmap #d1 a{display:block; width:73px; height:69px; text-decoration:none;}
#imgmap #d1 a:hover{background:url('office.jpg') -109px -317px no-repeat;}
#imgmap #d1 a span{display:none;}
#imgmap #d1 a:hover span{position:absolute; top:-25px; width:95px; display:block;}
#imgmap #d2{top:111px; left:211px;}
#imgmap #d2 a{display:block; width:47px; height:34px; text-decoration:none;}
#imgmap #d2 a:hover{background:url('office.jpg') -211px -373px no-repeat;}
#imgmap #d2 a span{display:none;}
#imgmap #d2 a:hover span{position:absolute; top:-25px; width:60px; display:block;}
#imgmap #d3{top:165px; left:168px;}
#imgmap #d3 a{display:block; width:81px; height:87px; text-decoration:none;}
#imgmap #d3 a:hover{background:url('office.jpg') -168px -427px no-repeat;}
#imgmap #d3 a span{display:none;}
#imgmap #d3 a:hover span{position:absolute; top:-25px; width:80px; display:block;}
#imgmap #d4{top:101px; left:72px; z-index:100;}
#imgmap #d4 a{display:block; width:96px; height:54px; text-decoration:none;}
#imgmap #d4 a:hover{background:url('office.jpg') -72px -625px no-repeat;}
#imgmap #d4 a span{display:none;}
#imgmap #d4 a:hover span{position:absolute; top:-25px; width:70px; display:block;}
#imgmap #d5{top:124px; left:45px;}
#imgmap #d5 a{display:block; width:64px; height:39px; text-decoration:none;}
#imgmap #d5 a:hover{background:url('office.jpg') -45px -386px no-repeat;}
#imgmap #d5 a span{display:none;}
#imgmap #d5 a:hover span{position:absolute; top:-38px; width:107px; display:block;}
</style>
</head>
<body>
<div id="imgmap">
<div class="map" id="d1"><a href="javascript:void(0)"><span>17寸的显示器</span></a></div>
<div class="map" id="d2"><a href="javascript:void(0)"><span>听筒坏了</span></a></div>
<div class="map" id="d3"><a href="javascript:void(0)"><span>白色的机箱</span></a></div>
<div class="map" id="d4"><a href="javascript:void(0)"><span>ThinkPad</span></a></div>
<div class="map" id="d5"><a href="javascript:void(0)"><span>我不知道这玩意是哪里买的</span></a></div>
</div>
</body>
</html>
例子背景圖：
