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) {
		menu_bb_01_bates_over = newImage("bb_images/menu_bb_01-bates_over.gif");
		home_over = newImage("bb_images/home-over.jpg");
		tech_over = newImage("bb_images/tech-over.jpg");
		galleries_over = newImage("bb_images/galleries-over.jpg");
		pshop_bates_over = newImage("bb_images/pshop-bates_over.jpg");
		pshop_over = newImage("bb_images/pshop-over.jpg");
		pshop_tech_over = newImage("bb_images/pshop-tech_over.jpg");
		bates_over = newImage("bb_images/bates-over.jpg");
		preloadFlag = true;
	}
}