google map problem

Answer 1

Well, you change the center by doing

map.setCenter(new GLatLng(lat, lng), map.getZoom());

Look here for more detail. If you know the zoom level you want, you can use that instead of map.getZoom().

Answer 2

Are you using the Map2 API? If so, just use the setCenter() method:

var map = new google.maps.Map2(document.getElementById("map"));
map.setCenter(new google.maps.LatLng(0, 0), 2);

See the docs for more help getting started.

Answer 3

Give your textbox an id, then you can write

geocoder.getLocations(document.getElementById("mytextbox").value, addToMap);