var showFootnote = function(event, el) {
    var note = $(el);
    var body = $(document.body);
    
    var clone = note.clone();
    
    clone.inject(body).setStyle('top', $(window).getScroll().y + 10).show();
    
    clone.getElements('a.close').addEvent('click', function(e) {
        new Event(e).stop();
        clone.hide();
    });
    
    $(document).addEvent('keyup', function(e) {
        if (new Event(e).key == 'esc') {
            clone.hide();
        };
    });
    
    return false;
};