var mt_map;

function OpenMap(destination) {
	if (mt_map == null) {
		mt_map = window.open(destination, 'map_popup', 'width=800, height=500, toolbar=0, location=0, directories=0, status=0, menubar=0, scrollbars=0, resizable=0');
		//mt_map.opener = self;
		//mt_map.changeCityRedirect = referrer;
	}
}

function CloseMap() {
	if (mt_map != null) {
		mt_map.close();
		mt_map = null;
	}
}

window.onfocus=CloseMap