找了好久说没有head的开始标签,但明明在那里，错那里了啊

<%@ page language="java" import="com.bjsxt.shopping.user.*" pageEncoding="GBK"%>
<%@ page import="java.util.*"%>
<html>
<head><title>金尚商城会员注册</title>
<script type="text/javascript">
var req;
function validate() {
var idField = document.getElementById("userid");
var url = "Validate.jsp?id=" + escape(idField.value);
if(window.XMLHttpRequest) {
req = new XMLHttpRequest();
} else if (window.ActiveXObject) {
req = new ActiveXObject("Microsoft.XMLHTTP");
}
req.open("GET", url, true);
req.onreadystatechange = callback;
req.send(null);
}

function callback() {
if(req.readyState == 4) {
if(req.status == 200) {
//alert(req.responseText);
var msg = req.responseXML.getElementsByTagName("msg")[0];
//alert(msg);
        setMsg(msg.childNodes[0].nodeValue);
}
}
}

function setMsg(msg) {
//alert(msg);
mdiv = document.getElementById("usermsg");
if(msg == "invalid") {
mdiv.innerHTML = "<font color='red'>username exists</font>";
} else {
mdiv.innerHTML = "<font color='green'>congratulations! you can use this username!</font>";
}
}
</script>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<meta name="keywords" content="Discuz!,Board,Comsenz,forums,bulletin board,">
<meta name="description" content="专区  - Discuz! Board">
<meta name="generator" content="Discuz! 4.0.0RC4 with Templates 4.0.0">
<meta name="MSSmartTagsPreventParsing" content="TRUE">
<meta http-equiv="MSThemeCompatible" content="Yes"><style type="text/css"><!--
a { text-decoration: none; color: #000000 }
a:hover { text-decoration: underline }
body { scrollbar-base-color: #F3F6FA; scrollbar-arrow-color: #4D76B3; font-size: 12px; background-color: #ffffff }
table { font: 12px Verdana,Tahoma; color: #000000 }
input,select,textarea { font: 11px Verdana,Tahoma; color: #000000; font-weight: normal; background-color: #F3F6FA }
select { font: 11px Verdana,Tahoma; color: #000000; font-weight: normal; background-color: #F3F6FA }
.nav { font: 12px Verdana,Tahoma; color: #000000; font-weight: bold }
.nav a { color: #000000 }
.header { font: 11px Verdana,Tahoma; color: #FFFFFF; font-weight: bold; background-image: url("images/green/bg01.gif") }
.header a { color: #FFFFFF }
.category { font: 11px Verdana,Tahoma; color: #000000; background-color: #EFEFEF }
.tableborder { background: #4D76B3; border: 0px solid #4D76B3 } 
.singleborder { font-size: 0px; line-height: 0px; padding: 0px; background-color: #F3F6FA }
.smalltxt { font: 11px Verdana,Tahoma }
.outertxt { font: 12px Verdana,Tahoma; color: #000000 }
.outertxt a { color: #000000 }
.bold { font-weight: bold }
.altbg1 { background: #F3F6FA }
.altbg2 { background: #FFFFFF }
--></style><script language="JavaScript" src="images/common.js"></script><style type="text/css" id="defaultPopStyle">.cPopText { font-family: Tahoma, Verdana; background-color: #FFFFCC; border: 1px #000000 solid; font-size: 12px; padding-right: 4px; padding-left: 4px; height: 20px; padding-top: 2px; padding-bottom: 2px; visibility: hidden; filter: Alpha(Opacity=80)}</style></head><body leftmargin="0" rightmargin="0" topmargin="0" onkeydown="if(event.keyCode==27) return false;"><div id="popLayer" style="position: absolute; z-index: 1000;" class="cPopText"></div>
</head>
<body>
<%request.setCharacterEncoding("GBK");
String action = request.getParameter("action");if(action != null && action.trim().equals("register")) {
String username = request.getParameter("username");
String password = request.getParameter("password");
//String password2 = request.getParameter("password2");
String phone = request.getParameter("phone");
String addr = request.getParameter("addr");
User u = new User();
u.setUsername(username);
u.setPassword(password);
u.setPhone(phone);
u.setAddr(addr);
u.setRdate(new Date());
u.save();
out.println("注册成功!恭喜!");
return;
}
 %><table id="table1" align="center" border="0" cellpadding="0" cellspacing="0" width="97%">
  <tbody>
  <tr valign="top">
    <td style="border-top: 0px none; border-right: 1px none; font-size: 9pt; font-family: Tahoma,Verdana; color: rgb(0, 0, 0);" width="100%"><table border="0" cellpadding="0" cellspacing="0" width="100%">
      <tbody><tr>
        <td bgcolor="#4d76b3" height="20">&nbsp;</td>
      </tr>
      <tr>
        <td bgcolor="#4e6793" height="2"></td>
      </tr>
      <tr>
        <td background="images/bitmap.gif" height="80" valign="middle"><table align="right" border="0" cellpadding="0" cellspacing="0" width="100%">
          <tbody><tr>
            <td valign="middle" width="5">&nbsp;</td>
            <td valign="middle" width="157"><div align="left"><a href="thinkshop.cn.htm" target="_blank"><br></a></div></td>
            <td valign="middle" width="812"><div align="right">
              <a style="left: 799px ! important; top: 61px ! important;" class="abp-objtab visible" href="http://www.allsmart.com/images/new1.swf"></a>                             </div></td>
            <td width="5">&nbsp;</td>
          </tr>
        </tbody></table></td>
      </tr>
      <tr>
        <td><table id="table3" bgcolor="#f3f6fa" cellpadding="3" cellspacing="0" width="100%">
          <tbody>
            <tr>
              <td style="border-top: 0px none; border-right: 1px none; font-size: 9pt; font-family: Tahoma,Verdana; color: rgb(0, 0, 0);" bgcolor="#f3f6fa" height="20"><font style="line-height: normal;" color="#000000"><a href="faq.php.htm"><br></a> </font></td>
              <td width="225"><table align="right" border="0" cellpadding="0" cellspacing="0" width="225">
                <tbody><tr>
                  <td width="75"><a href="index.php.htm"><br></a></td>
                  <td width="75"><a href="brandshop.php.htm" target="_blank"><br></a></td>
                  <td width="75"><a href="powered by Discuz!.htm" target="_blank"><br></a></td>
                  </tr>
              </tbody></table>
             </td>
              </tr>
            <tr bgcolor="#4d76b3">
              <td colspan="2" height="1"> </td>
            </tr>
            <tr bgcolor="#ffffff">
              <td colspan="2" height="5"></td>
            </tr>
          </tbody>
        </table></td>
      </tr>
    </tbody></table>
</td>
    </tr></tbody></table>
<table style="table-layout: fixed;" align="center" border="0" cellpadding="0" cellspacing="0" width="97%"> 
<tbody><tr><td class="nav" align="left" nowrap="nowrap" width="90%">&nbsp;&#37329;&#23578;&#21830;&#22478; &#187; 注册</td>
<td align="right" width="10%">&nbsp;<a href="#bottom"><img src="images/arrow_dw.gif" align="absmiddle" border="0"></a></td>        
</tr></tbody></table><br><form method="post" name="register" action="Register.jsp" onSubmit="this.regsubmit.disabled=true;">
<input type="hidden" name="action" value="register"/><table class="tableborder" align="center" cellpadding="4" cellspacing="1" width="97%">
<tbody><tr>
<td colspan="2" class="header">注册 - 必填内容</td>
</tr>
<tr>
<td class="altbg1" width="21%">用户名:</td>
<td class="altbg2"><input id="userid" name="username" size="25" maxlength="25" type="text" onblur="validate()"> 
<span id="usermsg"></span>
</tr><tr>
<td class="altbg1">密码:</td>
<td class="altbg2"><input name="password" size="25" type="password"></td>
</tr><tr>
<td class="altbg1">确认密码:</td>
<td class="altbg2"><input name="password2" size="25" type="password"></td>
</tr><tr>
<td class="altbg1">&#30005;&#35805;:</td>
<td class="altbg2"><input name="phone" type="text" id="phone" size="25"></td>
</tr><tr>
<td class="altbg1" valign="top">送货地址:</td>
<td class="altbg2"><textarea name="addr" cols="60" rows="5" id="addr"></textarea></td>
</tr>
</tbody></table>
<br>
<center><input name="regsubmit" value="提 &nbsp; 交" type="submit"></center>
</form><script language="JavaScript">
document.register.username.focus();
</script><p align="center">　</p>
<table class="smalltxt" cellpadding="4" cellspacing="0" width="100%">
<tbody><tr class="altbg1"><td>所有时间为 GMT+8, 现在时间是 2007-4-20 11:17</td>
<td align="right"><a href="http://bbs.allsmart.com/member.php?action=clearcookies" class="bold">清除 Cookies</a></td>
<td align="right" width="1">&nbsp;</td>
</tr>
<tr style="padding: 0px; font-size: 0px; line-height: 0px;" images="" green="" bg01.gif="" )=""><td colspan="3">　</td></tr>
</tbody></table>
<p align="center"><br>
<a name="bottom"></a><a target="_blank" href="http://www.thinkpadclub.com.cn/"><u>金尚商城</u></a><br>
服务热线:010-58052712
<!--<br><font color=#ebebeb>
Powered by <a href="http://www.discuz.net" target="_blank"><font color=#ebebeb>Discuz!</font></a> 
<a href="misc.php?action=viewlicense"><b style="color:#ebebeb">4.0.0RC4</b></a>&nbsp;
&copy; 2001-2005 <a href="http://www.comsenz.com" target="_blank"><font color=#ebebeb>Comsenz Technology Ltd</font></a>
<br>Processed in 0.011754 second(s), 5 queries
-->
</p>
</body></html>