function banners_itemVisibleInCallback(carousel, item, i, state, evt)
{
    // The index() method calculates the index from a
    // given index who is out of the actual item range.
    var idx = carousel.index(i, mycarousel_itemList.length);
    carousel.add(i, banners_getItemHTML(mycarousel_itemList[idx - 1]));
};

function banners_itemVisibleOutCallback(carousel, item, i, state, evt)
{
    carousel.remove(i);
};

/**
 * Item html creation helper.
 */
function banners_getItemHTML(item)
{
    return '<img src="' + item.url + '" width="75" height="75" alt="' + item.title + '" />';
};