How does the input tags really work?
<form id="LOGINFORM" name="LOGINFORM" style="margin:0px; padding:0px;" action="login.php" method="post">
          <table cellspacing="2" cellpadding="0" border="0" width="100%">
            <tr>
              <td width="100" align="center" valign="bottom">
                Username:
              </td>
              <td width="100" align="center" valign="bottom">
                Pass:
              </td>
              <td valign="top" align="right">
                &nbsp;
              </td>
            </tr>
            <tr>
              <td align="center">
                <input class="inputbox" style="text-align:center; width:90px;" maxlength="12" name="loginname" type="text" size="12">
              </td>
              <td align="center">
                <input class="inputbox" style="text-align:center; width:90px;" maxlength="12" name="password" type="password" size="12">
              </td>
              <td align="left">

<input
  class="button_ok"
  name="btnSubmit"
  id="btnSubmit"
  type="submit"
  value="Вход"
  onclick=""
>

              </td>
            </tr>
          </table>
        </form>