<style>

.test{position:relative;color:#0000cc;text-decoration:none;font-size:12px;}

.test:hover{background:none;}

.test span {display: none;}

.test:hover span{display:block;position:absolute;top:20px;left:8px;border-bottom:2px solid #eee;border-right:2px solid #eee;}

.test:hover span p{border:1px solid #ccc;background:#fff;color:#000;padding:5px;text-align:left;font-size:12px;}

</style>

<a class="test" href="http://www.isee5.com/#">链接一<span><p>动态网站制作指南_www.isee5.com</p></span></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;<a class="test" href="#">链接二<span><p>动态网站制作指南_www.isee5.com</p></span></a>&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;

<a class="test" href="http://www.isee5.com/#">链接三<span><p>动态网站制作指南_www.isee5.com</p></span></a>