Adding numbers inside a span tag in nav menu [closed]

by 

$("#top .menu ul li").each(function(i, el) {
    $(this).children('a').prepend("<span>" + (i+1) + "</span>");
});

or much better

$("#top2 .menu ul li").each(function() {
    var $this = $(this);
    $this.children('a').prepend("<span>" + ($this.index()+1) + "</span>");
});

check this out for the difference…
http://jsfiddle.net/reigel/aAYCt/