function login_valid()
	{
		if (login.user_id.value=="")
		{
			alert("Please enter your USER ID.");
			login.user_id.focus();
			return (false);
		}
		else if (login.user_id.value.length<6)
		{
			alert("USER ID must be of 6 characters.");
			login.user_id.focus();
			return (false);
		}
		else if (login.keyword.value=="")
		{
			alert("Please enter your KEYWORD.");
			login.keyword.focus();
			return (false);
		}
		else if (login.keyword.value.length<6)
		{
			alert("KEYWORD must be of 6 characters.");
			login.keyword.focus();
			return (false);
		}
		else return (true);
	}