Event.observe(window, 'load', function() {
    $$('#home-list-header a').invoke('observe', 'click', function(event) {
        event.stop();

        var element = Event.element(event).up('li');

        $$('#home-list-wrapper > div').invoke('addClassName', 'hidden');
        $$('#home-list-header li').invoke('removeClassName', 'active');

        $(element.id + '-content').removeClassName('hidden');
        element.addClassName('active');
    });
});