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_over = newImage("images/home-over.gif");
		menu_over = newImage("images/menu-over.gif");
		food_over = newImage("images/food-over.gif");
		pictures_over = newImage("images/pictures-over.gif");
		guestbook_over = newImage("images/guestbook-over.gif");
		contact_over = newImage("images/contact-over.gif");
		nederlands_over = newImage("images/nederlands-over.gif");
		preloadFlag = true;
	}
}