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) {
		id25_Y_y = newImage("indek/25-Y_y.jpg");
		id26_Z_z = newImage("indek/26-Z_z.jpg");
		id27_AA_aa = newImage("indek/27-AA_aa.jpg");
		id28_AB_ab = newImage("indek/28-AB_ab.jpg");
		id29_AC_ac = newImage("indek/29-AC_ac.jpg");
		id30_AD_ad = newImage("indek/30-AD_ad.jpg");
		id31_AE_ae = newImage("indek/31-AE_ae.jpg");
		id32_AF_af = newImage("indek/32-AF_af.jpg");
		preloadFlag = true;
	}
}