function chk_user_valid()
	{
		if (newuser.email.value == "")
			{
			alert("Please enter Your E-MAIL ADDRESS.");
			newuser.email.focus();
			return (false);
			}
		else if ( newuser.email.value.indexOf('@') == -1 || newuser.email.value.indexOf('.')==-1)
			{
			alert("Invalid E-MAIL ADDRESS.");
			newuser.email.focus();
			return (false);
			}
		else if (newuser.user_id.value == "")
			{
			alert("Please enter NEW USER ID.");
			newuser.user_id.focus();
			return (false);
			}
		else if (newuser.user_id.value.length<6)
			{
			alert("NEW USER ID must be of 6 characters.");
			newuser.user_id.focus();
			return (false);
			}
		else if (newuser.keyword.value == "")
			{
			alert("Please enter NEW KEYWORD.");
			newuser.keyword.focus();
			return (false);
			}
		else if (newuser.keyword.value.length<6)
			{
			alert("NEW KEYWORD must be of 6 characters.");
			newuser.keyword.focus();
			return (false);
			}
		else if (newuser.keyword.value!==newuser.confirm_keyword.value)
			{
			alert("KEYWORD didn\'t match.");
			newuser.confirm_keyword.focus();
			return (false);
			}
		else if (newuser.first_name.value == "")
			{
			alert("Please enter your FIRST NAME.");
			newuser.first_name.focus();
			return (false);
			}
		else if (newuser.last_name.value == "")
			{
			alert("Please enter your LAST NAME.");
			newuser.last_name.focus();
			return (false);
			}
		else if (newuser.month.selectedIndex==0)
			{
			alert("Please select your BIRTH MONTH.");
			newuser.month.focus();
			return (false);
			}
		else if (newuser.day.selectedIndex==0)
			{
			alert("Please select your BIRTH DAY.");
			newuser.day.focus();
			return (false);
			}
		else if (newuser.year.value == "")
			{
			alert("Please enter your BIRTH YEAR.");
			newuser.year.focus();
			return (false);
			}
		else if (newuser.year.value.length<4)
			{
			alert("Invalid BIRTH YEAR.");
			newuser.year.focus();
			return (false);
			}
		else if (newuser.telephone.value == "")
			{
			alert("Please enter your TELEPHONE NUMBER.");
			newuser.telephone.focus();
			return (false);
			}
		else if (newuser.street_address.value == "")
			{
			alert("Please enter your STREET ADDRESS.");
			newuser.street_address.focus();
			return (false);
			}
		else if (newuser.city.value == "")
			{
			alert("Please enter your CITY NAME.");
			newuser.city.focus();
			return (false);
			}
		else if (newuser.country.selectedIndex==0)
			{
			alert("Please select your COUNTRY NAME.");
			newuser.country.focus();
			return (false);
			}
		else if (newuser.educational_qualification.value == "")
			{
			alert("Please enter your EDUCATIONAL QUALIFICATION.");
			newuser.educational_qualification.focus();
			return (false);
			}
		else if (newuser.purpose_using_internet.selectedIndex==0)
			{
			alert("Please select your PURPOSE OF USING INTERNET.");
			newuser.purpose_using_internet.focus();
			return (false);
			}
			else  return (true);
	}