9126二级域名系统一段不错的代码。

<script>
<!--www.cncfan.com
function Check()
{
if (document.TFORM.username.value == ""){
document.TFORM.username.focus();
alert ("请输入域名");
return false;
}
if (document.TFORM.domainname.value == ""){
document.TFORM.domainname.focus();
alert ("数据完整");
return false;
}
var uName=document.TFORM.username.value;
var Dname=document.TFORM.domainname.value;
window.open("M_regcheck.asp?username="+uName+"&domainname="+Dname,"Check","width=225,height=130,status=0,scrollbars=0,resizable=1,menubar=0,toolbar=0,location=0");
}
//www.cncfan.com-->
</script>

<form name="TFORM" method="post" action="M_preg.asp">
<td>http://<input name="username" class="input2" size="16" maxLength="20">
<b>.</b> <select class="input2" name="domainname"><option value='yisou8.com'>yisou8.com</option></select>
<input type="button" onClick="javascript:Check()" value="检查域名是否可注册" class="input2" name="button">
</td>
</tr>


<tr>
<td width="70">用户密码:</td>
<td>
<input class="input2" size="15" value='系统自动生成密码' maxLength="12" readonly> 注册成功后系统会提示密码或者发到您的邮箱 </td>
</tr>

<tr>
<td width="70">主页名称:</td>
<td><input class="input2" size="20" name="sitename"> 隐藏真实URL后标题栏将会显示的文字</td>
</tr>
<tr>
<td width="70">转向地址:</td>
<td><input class="input2" value="http://" size="41" name="url"> <input type="checkbox" name="whide" value="OFF">是否隐藏真实URL？</td>
</tr>
<tr>
<td colspan="2" bgcolor="#42C1FF">
<p align="center"><b>请认真填写以下注册人信息</b></td>
</tr>
<tr>
<td width="70">联系EMAIL:</td>
<td><input class="input2" size="23" name="zzmail" value=""> 用于发送密码及激活域名用，请填真实信箱</td>
</tr>
<tr>
<td width="70">注册人姓名:</td>
<td><input class="input2" size="8" name="tname" maxlength="4"> 必填，<font color="#FF0000">注意：</font>本项填完后不得更改</td>
</tr>
<tr>
<td width="70">联系电话:</td>
<td><input class="input2" size="15" name="tphone" maxlength="20"> 必填，包括区号</td>
</tr>
<tr>
<td width="70">联系地址:</td>
<td><input class="input2" size="45" name="tadr"> 必填</td>
</tr>
<tr>
<td width="70">　</td>
<td><input class="input2" type="submit" value="提交注册 APPLY">
<input class="input2" type="reset" value="重写"> </td>
</tr>
</form>