function validateForm() {

var content = "Vul aub de volgende velden in:\n";

 validity = true;


	if (document.contact.Contactpersoon.value == "") {
		content = content + "- Contactpersoon\n";		
		validity = false;
	}
	
	if (document.contact.Tel.value == "") {
		content = content + "- Telefoon\n";		
		validity = false;
	}
	
	if (document.contact.Email.value == "") {
		content = content + "- E-mail\n";		
		validity = false;
	}
		

	if (! validity) alert(content);
	return validity;

}