function val_form ()
{
	valid = true;
        if (  (document.enquiry_form.realname.value == "") || (document.enquiry_form.email.value == "") || (document.enquiry_form.address.value == "") || (document.enquiry_form.city.value == "") || (document.enquiry_form.postcode.value == "") )
        {
                alert ( "Please fill in all fields with a * next to their title." )
                valid = false;
        }
        return valid;
}