Google Map ~ get address by latitude and longitude

this example is get address by lat, lng

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GEvent.addListener(map, "click", getAddress);
geocoder = new GClientGeocoder();


function getAddress(overlay, latlng) {
if (latlng != null) {
address = latlng;
geocoder.getLocations(latlng, showAddress);
}
}

function showAddress(response) {
map.clearOverlays();
if (!response || response.Status.code != 200) {
alert("Status Code:" + response.Status.code);
} else {
place = response.Placemark[0];
point = new GLatLng(place.Point.coordinates[1],place.Point.coordinates[0]);
marker = new GMarker(point);
map.addOverlay(marker);
marker.openInfoWindowHtml(
'<b>orig latlng:</b>' + response.name + '<br/>' +
'<b>latlng:</b>' + place.Point.coordinates[0] + "," + place.Point.coordinates[1] + '<br>' +
'<b>Status Code:</b>' + response.Status.code + '<br>' +
'<b>Status Request:</b>' + response.Status.request + '<br>' +
'<b>Address:</b>' + place.address + '<br>' +
'<b>Accuracy:</b>' + place.AddressDetails.Accuracy + '<br>' +
'<b>Country code:</b> ' + place.AddressDetails.Country.CountryNameCode);
}
}


/*

try this in console
geocoder.getLocations(map.getCenter(), showAddress);

*/


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source:
http://code.google.com/intl/zh-TW/apis/maps/documentation/javascript/v2/services.html

example:
http://code.google.com/intl/zh-TW/apis/maps/documentation/javascript/v2/examples/geocoding-reverse.html