function allMap() {
	map = new GMap2(document.getElementById("allMap"));
	map.addControl(new GLargeMapControl());
	map.addControl(new GScaleControl());
	map.setMapType(G_NORMAL_MAP);
	map.enableContinuousZoom();
	map.enableDoubleClickZoom();
	map.enableScrollWheelZoom();
	map.setCenter(new GLatLng(23, 113), 4);
var xmlAll = new GGeoXml("http://www.itdp-china.org/google_javascript/ITDP-China-cities.xml?"+(new Date()).getDate());
map.addOverlay(xmlAll);
}