/* Swap Image Nav */

  var aryImages = new Array(2);



  aryImages[0] = "images/ch_11_lg.jpg";
  aryImages[1] = "images/ch_12_lg.jpg";
  aryImages[2] = "images/ch_13_lg.jpg";
  aryImages[3] = "images/ch_14_lg.jpg";
  aryImages[4] = "images/ch_16_lg.jpg";
  aryImages[5] = "images/ch_20_lg.jpg";
  aryImages[6] = "images/ch_17_lg.jpg";
  aryImages[7] = "images/ch_18_lg.jpg";
  aryImages[8] = "images/ch_19_lg.jpg";


  for (i=0; i < aryImages.length; i++) {

    var preload = new Image();

    preload.src = aryImages[i];

  }



  function swap(imgIndex) {

    document['imgMain'].src = aryImages[imgIndex];

  }