var map;
var mgr;
function onLoad() {

	if (GBrowserIsCompatible()) {
		map = new GMap2(document.getElementById("map"));
		map.setCenter(new GLatLng(lat,lng),zoom);
		map.addControl(new GSmallMapControl());
		map.enableDoubleClickZoom(); 
		map.enableScrollWheelZoom(); 
		var point = new GLatLng(lat,lng);
		var marker = new GMarker(point);
		map.addOverlay(marker);
   }   
    else {
      alert("Sorry, the Google Maps API is not compatible with this browser");
    }
}