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) {
		id01_over = newImage("menu/top_01_a.gif");
		id02_over = newImage("menu/top_02_a.gif");
		id03_over = newImage("menu/top_03_a.gif");
		id04_over = newImage("menu/top_04_a.gif");
		id05_over = newImage("menu/top_05_a.gif");
		id06_over = newImage("menu/top_06_a.gif");
		id07_over = newImage("menu/top_07_a.gif");
		id08_over = newImage("menu/top_08_a.gif");
		id09_over = newImage("menu/top_09_a.gif");

		id10_over = newImage("menu/wnumerze_a.gif");
		id11_over = newImage("menu/archiwum_a.gif");
		id12_over = newImage("menu/cennik_a.gif");
		id13_over = newImage("menu/parametry_a.gif");

		id14_over = newImage("menu/2007_a.gif");
		id15_over = newImage("menu/2006_a.gif");
		id16_over = newImage("menu/2005_a.gif");
		id17_over = newImage("menu/2004_a.gif");


		preloadFlag = true;
	}
}