(function($) {
  var cache = [];
  // Arguments are image paths relative to the current page.
  $.preLoadImages = function() {
    var args_len = arguments.length;
    for (var i = args_len; i--;) {
      var cacheImage = document.createElement('img');
      cacheImage.src = arguments[i];
      cache.push(cacheImage);
    }
  }
})(jQuery)

jQuery.preLoadImages("images/content/cyan/background.jpg","images/content/cyan/button-top.png","images/content/cyan/button-bottom.png","images/content/green/background.jpg","images/content/green/button-top.png","images/content/green/button-bottom.png","images/content/orange/background.jpg","images/content/orange/button-top.png","images/content/orange/button-bottom.png","images/content/purple/background.jpg","images/content/purple/button-top.png","images/content/purple/button-bottom.png","images/content/red/background.jpg","images/content/red/button-top.png","images/content/red/button-bottom.png","images/content/violet/background.jpg","images/content/violet/button-top.png","images/content/violet/button-bottom.png","images/content/yellow/background.jpg","images/content/yellow/button-top.png","images/content/yellow/button-bottom.png");