$(document).ready(function() {
	$("#menu-demo li").hover(function() {//as soon as the mouse hovers over li
		$(this).stop().animate({//animation will start now
			marginTop: "-60"//move li tag up with 60px
		}, 800);//time to complete animation would be 1 second
	} , function() {
		$(this).stop().animate({
			marginTop: "0"
		}, 0);
	});

});