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) {
		o_b01 = newImage("../images/o_b01.gif");
		o_b02 = newImage("../images/o_b02.gif");
		o_b03 = newImage("../images/o_b03.gif");
		o_b04 = newImage("../images/o_b04.gif");
		o_b06 = newImage("../images/o_b06.gif");
		o_send = newImage("../images/o_send.gif");
		o_close = newImage("../images/o_close.gif");
		o_kas = newImage("../images/o_kas_xl.jpg");
		preloadFlag = true;
	}
}