function Login_ok() {
if (login_form.userid.value=="") { 
	alert("\n ¾ÆÀ̵𸦠ÀÔ·ÂÇÏ¼Å¾ß ÇÕ´Ï´Ù.");
	login_form.userid.focus();
        login_form.userid.select();
        return false;
}

if (login_form.passwd.value=="") { 
	alert("\n ºñ¹Ð¹øÈ£¸¦ ÀÔ·ÂÇÏ¼Å¾ß ÇÕ´Ï´Ù.");
	login_form.passwd.focus();
        login_form.passwd.select();
        return false;
 }
  return true;
}