javascript fotoalbum probleem

<script type="text/javascript">

var ImageList = new Array();
	ImageList[0] = new Image(500,400);
	ImageList[0].src = "Pictures/BASIC_02_02.jpg";
	ImageList[1] = new Image(500,400);
	ImageList[1].src = "Pictures/BASIC_02_02.jpg";
	ImageList[2] = new Image(500,400);
	ImageList[2].src = "Pictures/BASIC_02_02.jpg";
	ImageList[3] = new Image(500,400);
	ImageList[3].src = "Pictures/BASIC_02_02.jpg";
	ImageList[4] = new Image(500,400);
	ImageList[4].src = "Pictures/BASIC_02_02.jpg";
	ImageList[5] = new Image(500,400);
	ImageList[5].src = "Pictures/BASIC_02_03.jpg";
	ImageList[6] = new Image(500,400);
	ImageList[6].src = "Pictures/BASIC_02_03.jpg";
	ImageList[7] = new Image(500,400);
	ImageList[7].src = "Pictures/BASIC_02_03.jpg";
	ImageList[8] = new Image(500,400);
	ImageList[8].src = "Pictures/BASIC_02_03.jpg";
	ImageList[9] = new Image(500,400);
	ImageList[9].src = "Pictures/BASIC_02_03.jpg";

var timerID = null;
var timerRunning = false; 
var minIndx = 0;
var maxIndx = 10;
var count = 0;


function Init() {
  minIndx = 0;
  maxIndx = ImageList.length - 1; // bepaal de hoogste waarde voor de index
  count = 0
}

function previous() {
  if (count < minIndx) { count = maxIndx }
  if (count != 0) { count-- }
  document.een.src = ImageList[count].src;
  count--;
  document.twee.src = ImageList[count].src;
  count--;
  document.drie.src = ImageList[count].src;
  count--;
  document.vier.src = ImageList[count].src;
  count--;
  document.vijf.src = ImageList[count].src;
}

function next() {
  if (count > maxIndx) { count = minIndx }
  if (count != 0) { count++ }
  document.een.src = ImageList[count].src;
  count++;
  document.twee.src = ImageList[count].src;
  count++;
  document.drie.src = ImageList[count].src;
  count++;
  document.vier.src = ImageList[count].src;
  count++;
  document.vijf.src = ImageList[count].src;
}

</script>