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) {
		page_12_over = newImage("zdj/page_12-over.gif");
		page_23_over = newImage("zdj/page_23-over.gif");
		page_24_over = newImage("zdj/page_24-over.gif");
		page_25_over = newImage("zdj/page_25-over.gif");
		page_26_over = newImage("zdj/page_26-over.gif");
		page_27_over = newImage("zdj/page_27-over.gif");
		dol_39_over = newImage("zdj/dol_39-over.gif");
		preloadFlag = true;
	}
}