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_over = newImage("images/menu-over.jpg");
		restaurace_over = newImage("images/restaurace-over.jpg");
		sklipek_over = newImage("images/sklipek-over.jpg");
		penzion_over = newImage("images/penzion-over.jpg");
		hennessy_over = newImage("images/hennessy-over.jpg");
		fotogalerie_over = newImage("images/fotogalerie-over.jpg");
		kronika_over = newImage("images/kronika-over.jpg");
		kontakt_over = newImage("images/kontakt-over.jpg");
		preloadFlag = true;
	}
}