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) {
		button_1_over = newImage("/images/icon_motorsport_on.jpg");
		button_2_over = newImage("/images/icon_football_on.jpg");
		button_3_over = newImage("/images/icon_golf_on.jpg");
		button_4_over = newImage("/images/icon_rugby_on.jpg");
		button_5_over = newImage("/images/menu_about_us_on.jpg");
		button_6_over = newImage("/images/menu_contact_us_on.jpg");
		button_7_over = newImage("/images/menu_services_on.jpg");
		button_8_over = newImage("/images/menu_clients_on.jpg");
		button_9_over = newImage("/images/menu_profiles_on.jpg");
		button_10_over = newImage("/images/client_football_on.jpg");
		button_11_over = newImage("/images/client_motorsport_on.jpg");
		button_12_over = newImage("/images/client_golf_on.jpg");
		button_13_over = newImage("/images/client_rugby_on.jpg");
		preloadFlag = true;
	}
}