if (document.images) {


   image1on = new Image();
   image1on.src = "http://www.flatratecomputersolutions.com/images/flatrate_nav_home_on.jpg";
   image1off = new Image();
   image1off.src = "http://www.flatratecomputersolutions.com/images/flatrate_nav_home_off.jpg";

   image2on = new Image();
   image2on.src = "http://www.flatratecomputersolutions.com/images/flatrate_nav_why_on.jpg";
   image2off = new Image();
   image2off.src = "http://www.flatratecomputersolutions.com/images/flatrate_nav_why_off.jpg";
   
   image3on = new Image();
   image3on.src = "http://www.flatratecomputersolutions.com/images/flatrate_nav_services_on.jpg";
   image3off = new Image();
   image3off.src = "http://www.flatratecomputersolutions.com/images/flatrate_nav_services_off.jpg";

   image4on = new Image();
   image4on.src = "http://www.flatratecomputersolutions.com/images/flatrate_nav_pricing_on.jpg";
   image4off = new Image();
   image4off.src = "http://www.flatratecomputersolutions.com/images/flatrate_nav_pricing_off.jpg";
   
   image5on = new Image();
   image5on.src = "http://www.flatratecomputersolutions.com/images/flatrate_nav_testimonials_on.jpg";
   image5off = new Image();
   image5off.src = "http://www.flatratecomputersolutions.com/images/flatrate_nav_testimonials_off.jpg";   
   
   image6on = new Image();
   image6on.src = "http://www.flatratecomputersolutions.com/images/flatrate_nav_hours_on.jpg";
   image6off = new Image();
   image6off.src = "http://www.flatratecomputersolutions.com/images/flatrate_nav_hours_off.jpg";
   
   image7on = new Image();
   image7on.src = "http://www.flatratecomputersolutions.com/images/flatrate_nav_guarantee_on.jpg";
   image7off = new Image();
   image7off.src = "http://www.flatratecomputersolutions.com/images/flatrate_nav_guarantee_off.jpg"; 
}

 function turnOn(imageName) {
   if (document.images) {
     document[imageName].src = eval(imageName + "on.src");
   }
 }

 function turnOff(imageName) {
   if (document.images) {
     document[imageName].src = eval(imageName + "off.src");
   }
}