function wagt_map_4() {	
	var map = new GMap2(document.getElementById("wagt_map_4")); 
	var kmlCorr = new GGeoXml("http://www.gzbrt.org/kml/BRTcorridorOffset.xml?"+(new
Date()).getDate());
	var kmlCorr2 = new GGeoXml("http://www.gzbrt.org/kml/BRTcorridor2.xml?"+(new
Date()).getDate());
	map.setCenter(new GLatLng(23.122177, 113.405277), 12); 
	map.addControl(new GLargeMapControl());
	map.addControl(new GMapTypeControl());
	map.setMapType(G_HYBRID_MAP);
	map.enableDoubleClickZoom();
	map.addControl(new GScaleControl());
	map.addOverlay(kmlCorr);
	map.addOverlay(kmlCorr2);
}