function checkme(form) {
	var i = 0;
	var eval = /^([a-zA-Z0-9_\.\-])+\@(([a-zA-Z0-9\-])+\.)+([a-zA-Z0-9]{2,4})+$/;
	for (var x = 0; form.elements[x]; x++ ) {
		if (form.elements[x].title == "req" && form.elements[x].value == "") {
			alert("Vergeten het " + form.elements[x].name + "veld in te vullen?");
			form.elements[x].focus();
			return false;
		}
		if (form.elements[x].name == "Email" || form.elements[x].name == "Email_") {
			if (eval.test(form.elements[x].value) == false) i++
				if (i > 0) {
					alert("Het Emailadres is waarschijnlijk niet juist.");
	        			form.elements[x].focus();
			        	return false;
				}
		}
	} 
}