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) {
		kolej_over = newImage("../img/kolej-over.gif");
		tor_over = newImage("../img/tor-over.gif");
		wyciag_over = newImage("../img/wyciag-over.gif");
		prognoza_over = newImage("../img/prognoza-over.gif");
		galeria_over = newImage("../img/galeria-over.gif");
		cennik_over = newImage("../img/cennik-over.gif");
		parking_over = newImage("../img/parking-over.gif");
		staw_over = newImage("../img/staw-over.gif");
		widok_over = newImage("../img/widok-over.gif");
		pokoje_over = newImage("../img/pokoje-over.gif");
		preloadFlag = true;
	}
}