function null_check()
{
	var company_name=document.fm.company_name.value;
	var address=document.fm.address.value;
	var city=document.fm.city.value;
	var province=document.fm.province.value;
	var postal_code=document.fm.postal_code.value;
	
	var contact_name=document.fm.contact_name.value;
	var title=document.fm.title.value;
	var phone=document.fm.phone.value;
	var fax=document.fm.fax.value;
	var email=document.fm.email.value;
	
	var room_nights=document.fm.room_nights.value; //select
	
	var hr_contact_name=document.fm.hr_contact_name.value;//radio
	var hr_phone=document.fm.hr_phone.value;

	var anual_meeting=document.fm.anual_meeting.value;//select

	var banquet=document.fm.banquet.value;//radio
	var banquet_contact=document.fm.banquet_contact.value;
	var banquet_title=document.fm.banquet_title.value;
	var banquet_phone=document.fm.banquet_phone.value;

	var credit_application=document.fm.credit_application.value;//radio
	var credit_application_contact=document.fm.credit_application_contact.value;
	var credit_application_fax=document.fm.credit_application_fax.value;

	var marketing=document.fm.marketing.value;//radio

	if(company_name==""){ alert('please enter company name.'); document.fm.company_name.focus(); return false; }
	if(address==""){ alert('please enter address.'); document.fm.address.focus(); return false; }
	if(city==""){ alert('please enter city.'); document.fm.city.focus(); return false; }
	
	if(province==""){ alert('please enter province.'); document.fm.province.focus(); return false; }
	if(postal_code==""){ alert('please enter postal code.'); document.fm.postal_code.focus(); return false; }
	if(contact_name==""){ alert('please enter contact name.'); document.fm.contact_name.focus(); return false; }
	if(title==""){ alert('please enter title.'); document.fm.title.focus(); return false; }
	
	if(phone==""){ alert('please enter phone.'); document.fm.phone.focus(); return false; }
	if(fax==""){ alert('please enter fax.'); document.fm.fax.focus(); return false; }
	if(!(email.indexOf(".")>2) || !(email.indexOf("@")>0))
	{ alert('email address is not valid'); document.fm.email.focus(); return false; }
	
	if(room_nights==""){ alert('Q1 please enter room nights.'); document.fm.room_nights.focus(); return false; }
	
	//if(hr_contact_name==""){ alert('Q2 please enter contact name.'); document.fm.hr_contact_name.focus(); return false; }
	//if(hr_phone==""){ alert('Q2 please enter phone.'); document.fm.hr_phone.focus(); return false; }

//hotel reservations	
	//if(admin_contact==""){ alert('please enter hotel_reservation.'); document.fm.hotel_reservation.focus(); return false; }
	//if(admin_phone==""){ alert('please enter travel_dept_contact.'); document.fm.travel_dept_contact.focus(); return false; }
	//if(individual_contact==""){ alert('please enter individual_contact.'); document.fm.individual_contact.focus(); return false; }
	//if(individual_phone==""){ alert('please enter individual_phone.'); document.fm.individual_phone.focus(); return false; }
	//if(travel_agency_contact==""){ alert('please enter travel_agency_contact.'); document.fm.travel_agency_contact.focus(); return false; }
	//if(travel_agency_phone==""){ alert('please enter travel_agency_phone.'); document.fm.travel_agency_phone.focus(); return false; }

//barnquet
	if((document.fm.banquet[0].checked==false)
	&& (document.fm.banquet[1].checked==false)){ alert('Q3 please choose yes or no.'); return false; }
	
	//if(banquet_contact==""){ alert('Q3 please enter contact name.'); document.fm.banquet_contact.focus(); return false; }
	//if(banquet_title==""){ alert('Q3 please enter title.'); document.fm.banquet_title.focus(); return false; }
	//if(banquet_phone==""){ alert('Q3 please enter phone.'); document.fm.banquet_phone.focus(); return false; }
	
//anual meeting	
	if(anual_meeting==""){ alert('Q4 please enter number of meeting.'); document.fm.anual_meeting.focus(); return false; }

//credit application
	if((document.fm.credit_application[0].checked==false)
	&& (document.fm.credit_application[1].checked==false)){ alert('Q5 please choose yes or no.'); return false; }
	//if(credit_application_contact==""){ alert('please enter contact name.'); document.fm.credit_application_contact.focus(); return false; }
	//if(credit_application_fax==""){ alert('please enter fax number.'); document.fm.credit_application_fax.focus(); return false; }

//market	
	if((document.fm.marketing[0].checked==false)
	&& (document.fm.marketing[1].checked==false)){ alert('Q6 please choose yes or no.'); return false; }
//submit	
	document.fm.submit();
	
	//for each cid in request.Form("chk")
	//response.Write cid & "<br>"
	//next
}