var delay = 4700;
var start_frame = 0;

function start_slideshow(delay) {
  setTimeout(fadeInOut(delay), delay);
}

function fadeInOut(delay) {
  return(function() {
    lis = $$('#slide-images>li');
    new Effect.Appear(lis[1], { duration: 2, afterFinish: function(obj) {
      lisFade = lis[0].remove();
      lisFade.hide();
      $('slide-images').appendChild(lisFade);
      start_slideshow(delay);
    }});
  })
}

Event.observe(document, 'dom:loaded', function() {
  var lis = $$('#slide-images>li');
  if(lis.length > 1) for(i = 1; i < lis.length; i++) lis[i].hide();
});

Event.observe(window, 'load', function() {
  if($$('#slide-images>li').length > 1) start_slideshow(delay);
});