$(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);
    });
    
    //Cajas redondeadas
    //$('.outer').wrapInner('<div class="inner"></div>');
    //$("div.inner").corner("round 8px").parent().css('padding', '4px').corner("round 10px");
});