var aryImages = new Array(2);

  aryImages[0] = "images/Transfer/transfer2.jpg";
	aryImages[1] = "images/Transfer/transfer2.jpg";
	aryImages[2] = "images/Transfer/transfer1.jpg";
	aryImages[3] = "images/Transfer/transfer3.jpg";
	aryImages[4] = "images/Transfer/transfer4.jpg";
	aryImages[5] = "images/Transfer/transfer6.jpg";
	aryImages[6] = "images/Transfer/transfer5.jpg";
	aryImages[7] = "images/Transfer/transfer7.jpg";
	
  for (i=0; i < aryImages.length; i++) {
    var preload = new Image();
    preload.src = aryImages[i];
  }

  function swap(imgIndex, imgTarget) {
    document[imgTarget].src = aryImages[imgIndex];
  }