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;
if (document.images) {
    draw_over = newImage("images/draw-over.gif");
	draw_menu_over = newImage("images/draw-menu-over.gif");
	home_over = newImage("images/01-1-over.jpg");
	news_over = newImage("images/02-1-over.jpg");
	text_over = newImage("images/03-1-over.jpg");
	products_over = newImage("images/04-1-over.jpg");
	services_over = newImage("images/05-1-over.jpg");
	price_over = newImage("images/06-1-over.jpg");
	contact_us_over = newImage("images/07-1-over.jpg");
	preloadFlag = true;
}