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');
    });
}