function confirmLogout(url) {
	if(confirm("Weet u zeker dat u uzelf af wilt melden?")) {
		document.location = url;
	}
}

function updateSelect() {
	var selection = document.contact.vraag.value;
	if(selection == 13) {
		$('.hidden').show();
	} else {
		$('.hidden').hide();
	}
}