$(function() {
	// set opacity to nill on page load
	$("ul#menu span").css("opacity","0");
	
	// on mouse over: animate opacity to full
	$("ul#menu span").hover(
		function () {
			$(this).stop().animate({
				opacity: 1
			}, "slow");
		},
		
		// on mouse out: animate opacity to nill
		function () {
			$(this).stop().animate({
				opacity: 0
			}, "slow");
		}
	);
});