function popup(src, w, h){

	noweOkienko=null;
	if(window.screen){
		aw=screen.availWidth;
		ah=screen.availHeight;
	}
	else{
		aw=640;
		ah=450;
	}
	if(noweOkienko==null || noweOkienko.closed) {
		ustawienia=
		"left=" + (aw-w)/2 + ","
		+"top=" + (ah-h)/2 + ","
		+"screenX=" + (aw-w)/2 + ","
		+"screenY=" + (ah-h)/2 + ","
		+"width=" + w + ","
		+"height=" + h + ","
		+"innerWidth=" + w + ","
		+"innerHeight=" + h + ","
		+"toolbar=no,"
		+"location=no,"
		+"directories=no,"
		+"status=yes,"
		+"menubar=no,"
		+"scrollbars=yes,"
		+"resizable=no";
		noweOkienko = window.open(src,'enocleg',ustawienia);
	}
}