<script src="http://maps.google.com/?file=api&v=2&key=..."></script>
<div id="map" style="width:100%;height:100%"></div>
<script>
function load() {
var map = new GMap2(document.getElementById("map"));
map.setCenter(new GLatLng(33.670, 139.771), 10);
map.openInfoWindow(map.getCenter(),
document.createTextNode("Hello, world"));
}
</script>