function CheckPrijsVraag() {
	with(document.FormAction) {
		if(EmailAddress.value != "") {
			if(!CheckEmail(EmailAddress.value)) {
				alert("voer juist emailadres in");
				EmailAddress.focus();
				return false;
			}
		} else {
			alert("voer emailadres in");
			EmailAddress.focus();
			return false;					
		}
		if(ZipCode.value == "") {
			alert("voer postcode in");
			ZipCode.focus();
			return false;
		}
		if(HouseNumberAndExtension.value == "") {
			alert("voer huisnummer in");
			HouseNumberAndExtension.focus();
			return false;
		}
	}
	return true;
}