这里用CSS+JS实现点击文字后动画展开一个DIV层菜单，到期会自动关闭，是CSS结合JS实现的效果。
<!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>CSS+JS弹出DIV层</title> <script type="text/javascript"> var w = 0; var h = 0; var mout; function emotion(){ var oMenu = document.getElementById("menu"); if(w <= 50){ oMenu.style.display = "block"; fnLarge(); } else{ fnSmall(); } } function fnLarge(){ var oMenu = document.getElementById("menu"); if(w < 200){ w += 50; h += 25; oMenu.style.width = w+"px"; oMenu.style.height = h+"px"; window.setTimeout("fnLarge()",10); } } function fnSmall(){ var oMenu = document.getElementById("menu"); if(w > 0){ w -= 50; h -= 25; oMenu.style.width = w+"px"; oMenu.style.height = h+"px"; window.setTimeout("fnSmall()",5); } else{ oMenu.style.display = "none"; } } </script> <style type="text/css"> body{ text-align: center; } p{ cursor: pointer; margin: 0; padding: 0; font-size: 24px; display: inline; } div a:link, div a:visited{ color: #666; text-decoration: none; } div a:hover{ color: #FF6600; text-decoration: underline; } div{ border: 2px solid #666; background: #fff; margin: 5px auto; overflow: hidden; display: none; padding: 5px 10px; } ul,li{ margin: 0; padding: 0; } li{ list-style: none; width:70px; } li.title{ font-weight: bold; } </style> </head> <body> <p>点击这行文字试试!</p> <div> <table cellspacing="0" cellpadding="0"> <tr> <td valign="top"> <ul> <li>ASP</li> <li><a href="#">新闻</a></li> <li><a href="#">论坛</a></li> <li><a href="#">CMS</a></li> <li></li> </ul></td> <td valign="top"> <ul> <li>PHP</li> <li><a href="#">文章</a></li> <li><a href="#">聊天</a></li> <li><a href="#">插件</a></li> <li><a href="#">企业</a></li> </ul> </td> <td valign="top"> <ul> <li>JSP</li> <li><a href="#">AJAX</a></li> <li><a href="#">JQUERY</a></li> <li><a href="#">MYSQL</a></li> <li><a href="#">JAVA</a></li> </ul> </td> </tr> </table> </div> </body> </html>