아래 소스로 바꿔 보실래요.
여러군데 테그가 빠지고 맞지 않네요.
수정해 보았습니다.

--------------수정소스-----------------------
<table width="169" border="0" align="center" cellpadding="0" cellspacing="0">
<form name="fhead" method="post" action="javascript:fhead_submit(document.fhead);" autocomplete="off">
<input type="hidden" name="url" value="<?=$urlencode?>">
  <tr>
    <td width="10" height="142" rowspan="7"><img src="<?=$outlogin_skin_path?>/img/login_03.jpg"></td>
    <td width="149" height="34"><img src="<?=$outlogin_skin_path?>/img/login_02.jpg"></td>
    <td width="10" height="142" rowspan="7"><img src="<?=$outlogin_skin_path?>/img/login_01.jpg"></td>
  </tr>
  <tr>
    <td width="149" height="5"><img src="<?=$outlogin_skin_path?>/img/login_04.jpg" width="149" height="5"></td>
  </tr>
  <tr>
    <td width="149" height="23" valign="top">
   
    <table width="149" border="0" cellpadding="0" cellspacing="0">
      <tr>
        <td width="22" height="23" valign="top"><img src="<?=$outlogin_skin_path?>/img/login_05.jpg"></td>
        <td width="82" height="23">
       
        <table width="82" height="23" border="0" cellpadding="0" cellspacing="0" background="<?=$outlogin_skin_path?>/img/login_07.jpg">
          <tr>
            <td height="20" align="right" valign="middle">
            <input name="mb_id" type="text" size="12" maxlength="20" required itemname="아이디" value='아이디' onMouseOver='chkReset(this.form);' onFocus='chkReset(this.form);' class="ed">
            </td>
          </tr>
        </table>
       
        </td>
        <td width="45" height="46" rowspan="2" valign="top">
        <input type="image" src="<?=$outlogin_skin_path?>/img/login_09.jpg"></td>
      </tr>
      <tr>
        <td width="22" height="23" valign="top"><img src="<?=$outlogin_skin_path?>/img/login_06.jpg"></td>
        <td width="82" height="23">
       
        <table width="82" height="23" border="0" cellpadding="0" cellspacing="0" background="<?=$outlogin_skin_path?>/img/login_08.jpg">
          <tr>
            <td id=pw1 height="20" valign="top" align="center"><input type="text" size="12" maxlength="20" required itemname="패스워드" value='패스워드' onMouseOver='chkReset(this.form);' onfocus='chkReset(this.form);' class="ed"></td>
            <td id=pw2 style='display:none;' width="82" height="20" align="center"><input name="mb_password" type="password" size="12" maxlength="20" itemname="패스워드" onMouseOver='chkReset(this.form);' onfocus='chkReset(this.form);' class="ed"></td>
          </tr>
        </table>
       
        </td>
      </tr>
      <tr>
        <td>
       
        <table width="149" height="26" border="0" cellspacing="0" cellpadding="0">
          <tr>
            <td width="45" height="26"><a href="javascript:win_password_forget();"><img src="<?=$outlogin_skin_path?>/img/login_10.jpg"></a></td>
            <td width="52" height="26"><a href="<?=$g4[bbs_path]?>/register.php"><img src="<?=$outlogin_skin_path?>/img/login_11.jpg"></a></td>
            <td width="52" height="26"><input type="image" src="<?=$outlogin_skin_path?>/img/login_12.jpg"></td>
          </tr>
        </table>
       
        </td>
      </tr>
      <tr>
        <td>
       
        <table width="149" height="31" border="0" cellspacing="0" cellpadding="0">
          <tr>
            <td width="149" colspan="3"><img src="<?=$outlogin_skin_path?>/img/login_13.jpg" width="149" height="26"></td>
          </tr>
          <tr>
            <td width="149" colspan="3"><img src="<?=$outlogin_skin_path?>/img/login_14.jpg" width="149" height="5"></td>
          </tr>
        </table>
       
        </td>
      </tr>
    </table>
   
    </td>
  </tr>
  </form>
</table>

<script language="JavaScript">
function fhead_submit(f)
{
    if (!f.mb_id.value)
    {
        alert("회원아이디를 입력하십시오.");
        f.mb_id.focus();
        return;
    }
    if (document.getElementById('pw2').style.display!='none' && !f.mb_password.value)
    {
        alert("패스워드를 입력하십시오.");
        f.mb_password.focus();
        return;
    }
    f.action = "<?=$g4[bbs_path]?>/login_check.php";
    f.submit();
}
</script>
<!-- 로그인 전 외부로그인 끝 -->

엄지바우님 제가 소스를 올린다음 잘못된 부분이 보여서 수정하는 몇초사이에 먼저 올리신 걸 하셨네요.
위의 소스로 다시한 번 해보세요.
그리고 혹시 삐져 나오면 그 부분의 colspan을 조절해 보세요.
수고하세요.