<?
include_once("head.php");
?>
<br>

<script>
   function chk_frm(){
    if(!document.joinform.user_id.value){
     window.alert('아이디를 입력하세요');
     document.joinform.user_id.focus();
     return false;
    }

if(!document.joinform.pw.value){
     window.alert('비밀번호를 입력하세요');
     document.joinform.pw.focus();
     return false;
    }
            return true;
}

</script>

<form action=joincheck.php method=post onsubmit="return chk_frm()" name=joinform>
<table width=500 border=1 align=center>
<tr>
<td colspan=2 align=center>회원가입
<tr>
<td> 아이디
<td> <input type=text name=user_id size=10 maxlength=20>

<tr>
<td> 비밀번호
<td> <input type=password name=pw size=10 maxlength=20>

<tr>
<td> 이름
<td> <input type=text name=name size=10 maxlength=20>

<tr>
<td align=center colspan=2><input type=submit value='회원가입'></td>
</tr>
</table>
</form>

자바로 아이디,비번않입력하면 않넘어가게자바처리했는데
잘넘어가네요 ㅡ.ㅡ .. ;