function checkFormData() {
	
	var failure = "Required Data *\n\n"
	
	var formData = document.forms[0].elements;
	
	if (formData["firstname"].value == "") {
		failure += "missing: Name\n";
	}
	if (formData["lastname"].value == "") {
		failure += "missing: Surname\n";
	}
	if (formData["email"].value == "") {
		failure += "missing: Email\n";
	}
	if (formData["city"].value == "") {
		failure += "missing: City\n";
	}
	if (failure != "Required Data *\n\n") {
		alert (failure);
		return false;
	} else {
		return true;
	}
}