function map_open(municipalityWEBID, municipalityID, sessionID) {
	var s;

	if (municipalityWEBID != "") {
		s = "http://ma21.cenia.cz/municipalita/" + municipalityWEBID;
		if (sessionID != "") s += "/" + sessionID
	}
	else {
		s = "http://www.cenia.cz/web/ma21/ma21.nsf/Form?OpenAgent&Municipality=" + municipalityID;
		if (sessionID != "") s += "&Session=" + sessionID;
	}
	location.href = s;
}