패스워드를 입력하고 엔터를 누르면 바로 로그인이 되도록...

열매님의 레이어형태의 로그인 페이지를 쓰고 있습니다.

그런데 로그인시 패스워드를 입력하고 엔터를 누르면 바로 로그인이 안됩니다.

그래서 아래 소스중

<form method=post name=lay_login_form onsubmit="return flogin_submit(this);" autocomplete="off"> 이부분을

<form method=post name=lay_login_form action='../bbs/login_check.php' autocomplete="off">로 바꾸어 보았으나 여전히 패스워드 입력후 엔터를 바로 치면 로그인이 안되고 있습니다.

어떤 부분에서 문제가 되는지 조언 부탁드립니다.

아래는 전체 소스입니다.

<div id=LayLoginForm style="display: none; z-index: 2; left: 0px; width: 364px; position: absolute; top: 0px; height: 370px">

<table style="border: #eb477e 3px solid;" cellspacing=0 cellpadding=2 width=364 align=center border=0>
<form method=post name=lay_login_form onsubmit="return flogin_submit(this);" autocomplete="off">
<input type="hidden" name="url" value='<?=$url?>'>
 <tr>
 <td bgcolor="#ededed">
  <table cellspacing=0 cellpadding=0 width="100%" bgcolor=#ffffff border=0>
  <tr>
   <td align='left' style="padding:15px 5px 15px 25px;"><img src="<?=$outlogin_skin_path?>/img/img_login_tit.gif" align="absmiddle"></td>
   <td align="right"><img src="<?=$outlogin_skin_path?>/img/img_login_stit.gif"></td>
   <td align='right' style="padding:5px;" valign=top><a onclick="cover_off('LayLoginForm')" href="javascript:;"><img src="<?=$outlogin_skin_path?>/img/close.gif" width="11" height="11" border=0 align="absmiddle"></a></td>
  </tr>
  <tr>
   <td colspan='3' align="center">
    <table width="95%" cellspacing=0 cellpadding=0 width="100%" border=0>
     <tr>
      <td height='4' background="<?=$outlogin_skin_path?>/img/bg_step.gif">
      </td>
     </tr>
    </table>
   </td>
  </tr>
  <tr>
   <td colspan='3'>

        <table width="400" border="0" cellspacing="0" cellpadding="0" style="margin-top:5px;">
        <tr>
            <td width="400" height="130" align="center" bgcolor="#ffffff"><iframe src="about:blank" mce_src="about:blank" scrolling="no" frameborder="0" style="position:absolute;width:364px;height:130px;top:3px;left:3px;z-index:-1;border:none;display:block"></iframe>
                <table width="350" border="0" cellpadding="0" cellspacing="0">
                <tr>
                    <td width="210">
                        <table width="210" border="0" cellpadding="0" cellspacing="0">
                        <tr>
                            <td width="10"><img src="<?=$outlogin_skin_path?>/img/icon.gif" width="3" height="3" align="absmiddle"></td>
                            <td width="60" height="26"><b>아이디</b></td>
                            <td width="120"><INPUT class="ed" maxLength=20 size=20 name=mb_id itemname="아이디" required minlength="2" style="border: 1px solid #e6e6e6;"></td>
                        </tr>
                        <tr>
                            <td><img src="<?=$outlogin_skin_path?>/img/icon.gif" width="3" height="3" align="absmiddle"></td>
                            <td height="26"><b>패스워드</b></td>
                            <td><INPUT type=password class="ed" maxLength=20 size=20 name=mb_password itemname="패스워드" required style="border: 1px solid #e6e6e6;"></td>
                        </tr>
                        </table>
                    </td>
                    <td width="140" valign="top" align="left"><INPUT type=image value="로그인" src="<?=$outlogin_skin_path?>/img/btn_login.gif"></td>
                </tr>
                <tr>
                    <td height="5" colspan="3"></td>
                </tr>
                <tr>
                    <td height="5" colspan="3"></td>
                </tr>
                <tr>
                    <td height="26" colspan="3"><img src="<?=$outlogin_skin_path?>/img/icon.gif" width="3" height="3"align="absmiddle"> 아직 회원이 아니십니까?&nbsp;&nbsp;&nbsp;&nbsp;<a href="<?=$g4[bbs_path]?>/register.php"><img width="72" height="20" src="<?=$outlogin_skin_path?>/img/btn_register.gif" border=0 align="absmiddle"></a></td>
                </tr>
                <tr>
                    <td height="26" colspan="3"><img src="<?=$outlogin_skin_path?>/img/icon.gif" width="3" height="3" align="absmiddle"> 아이디/패스워드를 잊으셨습니까?&nbsp;&nbsp;&nbsp;&nbsp;<a href="javascript:;" onclick="win_password_forget('<?=$g4[bbs_path]?>/password_forget.php');"><img src="<?=$outlogin_skin_path?>/img/btn_password_forget.gif" width="108" height="20" border=0 align="absmiddle"></td>
                </tr>
                </table></td>
        </tr>
        </table>

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

<script language='Javascript'>
function flogin_submit(f)
{
    <?
    if ($g4[https_url])
        echo "f.action = '$g4[https_url]/$g4[bbs]/login_check.php';";
    else
        echo "f.action = '$g4[bbs_path]/login_check.php';";
    ?>

    return true;
}
</script>