function validate (x) {
	var fields = ['contactname', 'email', 'tel', 'findus', 'enquiry'];
	var msg = ['contact name', 'e-mail', 'telephone number', 'how you found us', 'enquiry'];
	for (i = 0; i < fields.length; i++) {
		if (x.elements[fields[i]].value == "" || x.elements[fields[i]].value.length == 0) {
			alert("Please fill in the "+msg[i]+" field.");
			return false;
		}
	}
	return true;
}