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("http://bkfoto.de/html/menu/home-over.gif");
		galerien_over = newImage("http://bkfoto.de/html/menu/galerien-over.gif");
		ueber_over = newImage("http://bkfoto.de/html/menu/ueber-over.gif");
		kontakt_over = newImage("http://bkfoto.de/html/menu/kontakt-over.gif");
		impressum_over = newImage("http://bkfoto.de/html/menu/impressum-over.gif");
		links_over = newImage("http://bkfoto.de/html/menu/links-over.gif");
		anderes_over = newImage("http://bkfoto.de/html/menu/anderes_over.gif");
		preloadFlag = true;
	}
}