HTML jQuery
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html> <head> <title></title> <style type="text/css"> * { margin:0; padding:0;} .dl_b{margin:0; padding:15px;height:10px;background:#0099ff} .c{width:100px;height:30px} .panel{width:100%;height:300px;background:#8080c0} </style> <script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.8.0/jquery.min.js"></script> </head> <body> <div id="dlzc" class="dl_b"> 登录/注册</div> <div class="panel" id ="panel" style="display:none;"> <div id="dlpage" style="float:left"> <form action="action"> <br> <br> <br> <br><pre class="brush:php;toolbar:false"> 用户名:<input type="text" name="username"/><br> 密 码:<input type="password" name="password"/><br> <input class="c" type="submit" value="登录" /><br>