var aryImages = new Array();

//Aviation...
  aryImages[0] = "images/full/aviation/007_19.jpg";
  aryImages[1] = "images/full/aviation/015_11.jpg";
  aryImages[2] = "images/full/aviation/009_17.jpg";
  aryImages[3] = "images/full/aviation/010_16.jpg";
  aryImages[4] = "images/full/aviation/011_15.jpg";
  aryImages[5] = "images/full/aviation/014_12.jpg";
  aryImages[6] = "images/full/aviation/019_7.jpg";
  aryImages[7] = "images/full/aviation/003_23.jpg"

  for (i=0; i < aryImages.length; i++) {
    var preload = new Image();
    preload.src = aryImages[i];
  }

  function swap(imgIndex) {
    document['imgMain'].src = aryImages[imgIndex];
  }