if (document.images) {
  preload_image_object = new Image();
  // set image url
  image_url = new Array();
  image_url[0] = "images/letterbox_transparency.jpg";
  image_url[1] = "images/letterbox_leadership.jpg";
  image_url[2] = "images/letterbox_perspective.jpg";
  image_url[3] = "images/letterbox_responsiveness.jpg";

   var i = 0;
   for(i=0; i<=3; i++)
     preload_image_object.src = image_url[i];
}

var slides=[]; //THIRD SLIDESHOW
//configure the below images and descriptions to your own, note optional links, target and window specifications. [image source, title, link, target, window specs (top=250, left=300, width=500, height=300, location, resizable, scrollbars)]
slides[0] = ["images/letterbox_transparency.jpg", "", "", "", ""];
slides[1] = ["images/letterbox_leadership.jpg", "", "", "", ""];
slides[2] = ["images/letterbox_perspective.jpg", "", "", "", ""];
slides[3] = ["images/letterbox_responsiveness.jpg", "", "", "", ""];
//optional properties for these images:
slides.no_descriptions=1; //use for no descriptions displayed
slides.pause=0; //use for pause onmouseover
slides.image_controls=1; //use images for controls
slides.random=0; //set a random slide sequence on each page load
slides.manual_start=0; //start show in manual mode (stopped)
slides.border=0; //set border width for images
slides.border_color=0; //set border color for images*/
slides.width=767; //use to set width of widest image if dimensions vary
slides.height=173; //use to set height of tallest image if dimensions vary
slides.no_descriptions=1;
slides.no_added_linebreaks=1;
/*slides.specs='width=300, height=250'*/ //global specifications for this show's new window(s)
slides.button_highlight=0; //onmouseover background-color for image buttons (requires image_controls=1)
slides.delay=3000; //Use for a slide show with no controls
slides.no_controls=1; //Set miliseconds delay between slides for a given show, may also be set in the call as the last parameter