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

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