body { font:verdena; font-size:14px; color:#000 }
h1{ font:verdena; font-size:22px; color:#000 }
h2{ font:verdena; font-size:15px; color:#000; text-align:left }
div#main { margin:30 }
/*关键代码开始*/
a.info {
position:relative; z-index:0; background-color:#ccc; color:#000; text-decoration:none }
a.info:hover {
z-index:1; background-color:#ff0 }
a.info span {
display: none }
a.info:hover span { display:block; position:absolute; top:25px; left:60px; width:130px; border:1px solid #0cf; background-color:#cff; color:#000; text-align: center }
/*关键代码结束*/
</style>
<body>
<div ><span>这是我在51js.com的专用头像</span></a><br><br><br>
</div>
</body>