var site = {};

$(document).ready(function() {
  site.promo = {};
  site.promo.images = $('div.promotions div.images div.img');
  if (site.promo.images.length > 0) {
    site.promo.active = 0;
    site.promo.images.first().fadeIn('slow');
    site.promo.timer = setTimeout(site.changeImage, 3000);
  }
});

site.changeImage = function() {
  site.promo.images.eq(site.promo.active).fadeOut('fast', function() {
    site.promo.active++;
    if (site.promo.active > (site.promo.images.length - 1)) {
      site.promo.active = 0;
    }
    site.promo.images.eq(site.promo.active).fadeIn('slow', function() {
      site.promo.timer = setTimeout(site.changeImage, 5000);
    });
  });
};