function disablebox(idBox)
{
	document.frmContact[idBox].disabled = true;
	document.frmContact[idBox].style.background = "#e9e9e9";
}

function enablebox(idBox)
{
	document.frmContact[idBox].disabled = false;
	document.frmContact[idBox].style.background = "#ffffff";
} 

function disableboxes() {
	if (document.frmContact.customer.checked) {
		disablebox("address1");
		disablebox("address2");
		disablebox("address3");
		disablebox("address4");
		disablebox("postcode");
		enablebox("customer_ref");
		document.frmContact.IsExistingCustomer.value="yes"
	} else {
		enablebox("address1");
		enablebox("address2");
		enablebox("address3");
		enablebox("address4");
		enablebox("postcode");
		disablebox("customer_ref");
		document.frmContact.IsExistingCustomer.value="no"
	}	
}

function ClearEnquiry() {
	if (document.frmContact.enquiry.value=="Enter your enquiry here...") {
		document.frmContact.enquiry.value=""
	}
}

function CheckForm() {
	var email = document.frmContact.emailadd.value;
	if (!CheckEmail(email) && email.length>0) {
		alert("Please enter a valid email address.");
		document.frmContact.emailadd.focus();
	} else if (document.frmContact.firstname.value=="") {
		alert("Please enter your first name.");
		document.frmContact.firstname.focus();
	} else if (document.frmContact.surname.value=="") {
		alert("Please enter your surname.");
		document.frmContact.surname.focus();
	} else if (document.frmContact.birthday_day.value=="" || document.frmContact.birthday_month.value=="" || document.frmContact.birthday_year.value=="") {
		alert("Please enter your date of birth.");
		document.frmContact.birthday_day.focus();
	} else if (document.frmContact.mobile_tel.value=="") {
		alert("Please enter your mobile number.");
		document.frmContact.mobile_tel.focus();
	} else if (document.frmContact.emailadd.value=="") {
		alert("Please enter your email address.");
		document.frmContact.emailadd.focus();
	} else {
		document.frmContact.email.value=email;
		document.frmContact.submit()
	}
}