function open_window(URL,szerokosc, wysokosc) {
		var NEW_WIN = null;
		NEW_WIN = window.open (URL, "Konin", 
									"toolbar=no,width="+
									szerokosc+
									",height="+wysokosc+
									",directories=no, status=no,"+
									"scrollbars=no, resize=no, menubar=no");
	}