function slideshow()
{
    var $active = $('#slideshow a.active');
    if($active.length==0)
    {
        $active = $('#slideshow a:last');
    }
    var $next = $active.next().length ? $active.next() : $('#slideshow a:first');
    $active.addClass('last-active');
    $next.css({opacity: 0.0}).addClass('active').animate({opacity: 1.0},700,function() {$active.removeClass('active last-active');});
}