function isValidForm(n) {
	if (n == 1) {
		var form=document.commercial, msg="", status=true;	

		if (form.name.value == "") { msg += "\nEmpty First Name"; form.name.focus(); status=false; }
		if (form.address.value == "") { msg += "\nNo Address Specified"; form.address.focus(); status=false; }
		if (form.postcode.value == "") { msg += "\nEmpty Post Code"; form.postcode.focus(); status=false; }
		if (form.telephone.value == "") { msg += "\nEmpty Telephone Number"; form.telephone.focus(); status=false; }
		if (form.email.value == "") { msg += "\nEmpty Email Address"; form.email.focus(); status=false; }
	}
	
	if (n == 2) {
		var form=document.residential, msg="", status=true;	

		if (form.name.value == "") { msg += "\nEmpty First Name"; form.name.focus(); status=false; }
		if (form.address.value == "") { msg += "\nNo Address Specified"; form.address.focus(); status=false; }
		if (form.postcode.value == "") { msg += "\nEmpty Post Code"; form.postcode.focus(); status=false; }
		if (form.telephone.value == "") { msg += "\nEmpty Telephone Number"; form.telephone.focus(); status=false; }
		if (form.email.value == "") { msg += "\nEmpty Email Address"; form.email.focus(); status=false; }
	}
	
	if (n == 3) {
		var form=document.rural, msg="", status=true;	

		if (form.name.value == "") { msg += "\nEmpty First Name"; form.name.focus(); status=false; }
		if (form.address.value == "") { msg += "\nNo Address Specified"; form.address.focus(); status=false; }
		if (form.postcode.value == "") { msg += "\nEmpty Post Code"; form.postcode.focus(); status=false; }
		if (form.telephone.value == "") { msg += "\nEmpty Telephone Number"; form.telephone.focus(); status=false; }
		if (form.email.value == "") { msg += "\nEmpty Email Address"; form.email.focus(); status=false; }
	}

	if (n == 4) {
		var form=document.auction, msg="", status=true;	

		if (form.name.value == "") { msg += "\nEmpty First Name"; form.name.focus(); status=false; }
		if (form.address.value == "") { msg += "\nNo Address Specified"; form.address.focus(); status=false; }
		if (form.postcode.value == "") { msg += "\nEmpty Post Code"; form.postcode.focus(); status=false; }
		if (form.telephone.value == "") { msg += "\nEmpty Telephone Number"; form.telephone.focus(); status=false; }
		if (form.email.value == "") { msg += "\nEmpty Email Address"; form.email.focus(); status=false; }
	}

	if (n == 5) {
		var form=document.contact, msg="", status=true;	

		if (form.name.value == "") { msg += "\nEmpty First Name"; form.name.focus(); status=false; }
		if (form.address.value == "") { msg += "\nNo Address Specified"; form.address.focus(); status=false; }
		if (form.postcode.value == "") { msg += "\nEmpty Post Code"; form.postcode.focus(); status=false; }
		if (form.telephone.value == "") { msg += "\nEmpty Telephone Number"; form.telephone.focus(); status=false; }
		if (form.email.value == "") { msg += "\nEmpty Email Address"; form.email.focus(); status=false; }
	}
	
	if (n == 6) {
		var form=document.mail, msg="", status=true;	

		if (form.name.value == "") { msg += "\nEmpty First Name"; form.name.focus(); status=false; }
		if (form.email.value == "") { msg += "\nEmpty Email Address"; form.email.focus(); status=false; }
	}

	if (n == 7) {
		var form=document.commercial_enquiry, msg="", status=true;	

		if (form.name.value == "") { msg += "\nEmpty First Name"; form.name.focus(); status=false; }
		if (form.company_name.value == "") { msg += "\nEmpty Company Name"; form.company_name.focus(); status=false; }
		if (form.address.value == "") { msg += "\nNo Address Specified"; form.address.focus(); status=false; }
		if (form.postcode.value == "") { msg += "\nEmpty Post Code"; form.postcode.focus(); status=false; }
		if (form.telephone_work.value == "") { msg += "\nEmpty Work Telephone Number"; form.telephone_work.focus(); status=false; }
		if (form.email.value == "") { msg += "\nEmpty Email Address"; form.email.focus(); status=false; }
	}

	if (status) {
		return true;
	} else {
		if (msg != "") alert ("Please correct the following before you continue: \n" + msg);
		return false;
	}
}

function processForm(n) {
	var valid = isValidForm(n);
	if (valid) {
		if (n == 1) {
			document.commercial.submit();
		}
		if (n == 2) {
			document.residential.submit();
		}
		if (n == 3) {
			document.rural.submit();
		}
		if (n == 4) {
			document.auction.submit();
		}
		if (n == 5) {
			document.contact.submit();
		}
		if (n == 6) {
			document.mail.submit();
		}
		if (n == 7) {
			document.commercial_enquiry.submit();
		}
	}
}