function preloader(mode) {
  var autoLoadArray = new Array();

  if(mode === 'wes') {
    autoLoadArray = ['/assets/wes/image/button/home_b.jpg',
                     '/assets/wes/image/button/about_b.jpg',
                     '/assets/wes/image/button/difference_b.jpg',
                     '/assets/wes/image/button/methodology_b.jpg',
                     '/assets/wes/image/button/engagements_b.jpg',
                     '/assets/wes/image/button/biography_b.jpg',
                     '/assets/wes/image/button/home_b-ja.jpg',
                     '/assets/wes/image/button/about_b-ja.jpg',
                     '/assets/wes/image/button/difference_b-ja.jpg',
                     '/assets/wes/image/button/methodology_b-ja.jpg',
                     '/assets/wes/image/button/engagements_b-ja.jpg',
                     '/assets/wes/image/button/biography_b-ja.jpg'];

  } else if(mode === 'step') {
    autoLoadArray = ['/images/step/nav/access-hi.gif',
                     '/images/step/nav/corporate-hi.gif',
                     '/images/step/nav/candidates-hi.gif',
                     '/images/step/nav/employers-hi.gif',
                     '/images/step/nav/contact-hi.gif',
                     '/images/step/nav/jobs-hi.gif'];
  } else {
    //Assume WSA
    autoLoadArray = ['/images/btn_register_hi_en.jpg',
                     '/images/btn_register_hi_jp.jpg',
                     '/images/nav/default-about-hi.png',
                     '/images/nav/default-employers-hi.png',
                     '/images/nav/default-home-hi.png',
                     '/images/nav/default-jobs-hi.png',
                     '/images/nav/default-resources-hi.png',
                     '/images/nav/default-services-hi.png'];
  }

  // Preload images from array
  var i = 0;
  for(i=0; i <= autoLoadArray.length - 1; i++) {
    var imageObj = new Image();
    imageObj.src = autoLoadArray[i];
  }
}