$(document).ready(function() {

		$("#topnav li").prepend("<span></span>"); //Throws an empty span tag right before the a tag

		$("#topnav li").each(function() { //For each list item...
			var linkText = $(this).find("a").html(); //Find the text inside of the <a> tag
			$(this).find("span").show().html(linkText); //Add the text in the <span> tag
		}); 

		$("#topnav li").hover(function() {	//On hover...
			$(this).find("span").stop().animate({
				marginTop: "-40" //Find the <span> tag and move it up 40 pixels
			}, 250);
		} , function() { //On hover out...
			$(this).find("span").stop().animate({
				marginTop: "0"  //Move the <span> back to its original state (0px)
			}, 250);
		});

	});