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

      if ( $active.length == 0 ) $active = $('#slideshow IMG:last');

      var $next =  $active.next().length ? $active.next()
        : $('#slideshow IMG:first');

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

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

    $(function() {
      setInterval( "slideSwitch()", 5000 );
    });