function slideSwitch()
{
    var $active = $('#slideshow div.active');

    if ($active.length == 0) $active = $('#slideshow div:last');
    
    var $next =  $active.next().length ? $active.next() : $('#slideshow div:first');

    $active.addClass('last-active');

    $next.css({opacity: 0.0})
        .addClass('active')
        .animate({opacity: 1.0}, 1000, function() {
            $active.removeClass('active last-active');
        });
}