function CacheImage(ImageSource) { // TURNS THE STRING INTO AN IMAGE OBJECT
   var ImageObject = new Image();
   ImageObject.src = ImageSource;
   return ImageObject;
}

function ShowSlide(Direction) {
   if (SlideReady) {
      NextSlide = CurrentSlide + Direction;
      document.SlideShow.Previous.disabled = (NextSlide == 0);
      document.SlideShow.Next.disabled = (NextSlide == (pictureArray.length-1));
		if ((NextSlide >= 0) && (NextSlide < pictureArray.length)) {
            document.images['Screen'].src = pictureArray[NextSlide].src;
            CurrentSlide = NextSlide++;
            Message = 'Picture ' + (CurrentSlide+1) + ' of ' + pictureArray.length;
            window.status = Message;
            if (Direction == 1) CacheNextSlide();
      }
      return true;
   }
}

function Download() {
   if (pictureArray[NextSlide].complete) {
      SlideReady = true;
      self.defaultStatus = Message;
   }
   else setTimeout("Download()", 100); // CHECKS DOWNLOAD STATUS EVERY 100 MS
   return true;
}

function CacheNextSlide() {
   if ((NextSlide < pictureArray.length) && (typeof pictureArray[NextSlide] == 
'string'))
{ // ONLY CACHES THE IMAGES ONCE
      SlideReady = false;
      self.defaultStatus = 'Downloading next picture...';
      pictureArray[NextSlide] = CacheImage(pictureArray[NextSlide]);
      Download();
   }
   return true;
}

function StartSlideShow() {
   CurrentSlide = -1;
   pictureArray[0] = CacheImage(pictureArray[0]);
   SlideReady = true;
   ShowSlide(1);
}