<form action="subdomain.domain.com/" method="post">
 <table width="337" id="login">
  <tr>
    <td width="128" class="bodycopybold">USERNAME:</td>
    <td width="128" class="bodycopybold">PASSWORD:</td>
    <td width="172">&nbsp;</td>
  </tr>
  <tr>
    <td><input id="user_name" name="user[name]" size="15" type="text" value="" /></td>
    <td><input id="user_password" name="user[password]" size="15" type="password" value="" /></td>
<td><input name="submit" type="submit" value=" Login "/></td>
  </tr>
 </table>
</form>