function newImage(arg) {
			if (document.images) {
				rslt = new Image();
				rslt.src = arg;
				return rslt;
			}
		}
		
		function changeImages() {
			if (document.images && (preloadFlag == true)) {
				for (var i=0; i<changeImages.arguments.length; i+=2) {
					document[changeImages.arguments[i]].src = changeImages.arguments[i+1];
				}
			}
		}
		
		var preloadFlag = false;
		function preloadImages() {
			if (document.images) {
				AboutUsOn = newImage("images/nav/AboutUsOn.gif");
				ProductsAndServicesOn = newImage("images/nav/ProductsAndServicesOn.gif");
				SelectedTransactionsOn = newImage("images/nav/SelectedTransactionsOn.gif");
				QuestionsOn = newImage("images/nav/QuestionsOn.gif");
				ContactUsOn = newImage("images/nav/ContactUsOn.gif");
				preloadFlag = true;
			}
		}