<script type="text/javascript">
<!--
	function checkForm() {
		var form = document.getElementById('arForm');
	
		var msg = "";
		if(form.vemail.value == "")
			msg += "\t * You must fill in your e-mail address.\n";

		if(form.firstname.value == "")
			msg += "\t * You must fill in your firstname.\n";

		if(form.lastname.value == "")
			msg += "\t * You must fill in your lastname.\n";

		if(form.city.value == "")
			msg += "\t * You must fill in your city.\n";

		if(msg != "") {
			alert("The form cannot be submitted for the following reasons:\n\n" + msg + "\nPlease correct these errors and re-submit.");
			return false;
		} else {
			return true;
		}
	}
//-->
</script>