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) {
		home_click = newImage("images/home-red_clicked.jpg");
		home_over = newImage("images/home-red-over.jpg");
		scc_click = newImage("images/scc-red_clicked.jpg");
		scc_over = newImage("images/scc-red-over.jpg");
		vision_click = newImage("scc-vision-red_clicked.jpg");
		vision_over = newImage("images/scc-vision-red-over.jpg");
		slra_click = newImage("images/slra-red_clicked.jpg");
		slra_over = newImage("images/slra-red-over.jpg");
		declaration_click = newImage("images/declaration-red_clicked.jpg");
		declaration_over = newImage("images/declaration-red-over.jpg");
		maps_click = newImage("images/maps-red_clicked.jpg");
		maps_over = newImage("images/maps-red-over.jpg");
		links_click = newImage("images/links-red_clicked.jpg");
		links_over = newImage("images/links-red-over.jpg");
		preloadFlag = true;
	}
}