function preloadImage(arg) {
   	if (document.images) {
   		rslt = new Image();
   		rslt.src = arg;
   	}
   }
   function imgSwap(obj,imgFile) {
     obj.src = "images/" + imgFile;
   }
  preloadImage("images/construction_dwn.jpg");
  preloadImage("images/design_dwn.jpg");
  preloadImage("images/consulting_dwn.jpg");
  preloadImage("images/renovations_dwn.jpg");
  preloadImage("images/projects_dwn.jpg");
  preloadImage("images/company_dwn.jpg");
  preloadImage("images/contact_dwn.jpg");
  preloadImage("images/testimonials_dwn.jpg");
  preloadImage("images/home_dwn.jpg");
  preloadImage("images/faqs_dwn.jpg");