//init

	new ypSlideOutMenu("nav21", "left", 0, 0, 60, 30);

	new ypSlideOutMenu("nav22", "left", 18, 0, 70, 30);

	new ypSlideOutMenu("nav23", "left", 0, 0, 70, 30);

	new ypSlideOutMenu("nav24", "left", 27, 0, 57, 30,true);	

	function validateZip(zip) {

		var regex = new RegExp(/(\d{5})/);

		if (!regex.test(zip)) {

			alert("Zip code is not valid.");

			return false;

		}

		return true;

	}