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var map;
function init() {
map = new OpenLayers.Map('map', {allOverlays: true});
map.addControl(new OpenLayers.Control.LayerSwitcher());
// the SATELLITE layer has all 22 zoom level, so we add it first to
// become the internal base layer that determines the zoom levels of the
// map.
var gsat = new OpenLayers.Layer.Google(
"Google Satellite",
{type: google.maps.MapTypeId.SATELLITE, numZoomLevels: 22}
);
var gphy = new OpenLayers.Layer.Google(
"Google Physical",
{type: google.maps.MapTypeId.TERRAIN, visibility: false}
);
var gmap = new OpenLayers.Layer.Google(
"Google Streets", // the default
{numZoomLevels: 20, visibility: false}
);
var ghyb = new OpenLayers.Layer.Google(
"Google Hybrid",
{type: google.maps.MapTypeId.HYBRID, numZoomLevels: 22, visibility: false}
);
map.addLayers([gsat, gphy, gmap, ghyb]);
// Google.v3 uses EPSG:900913 as projection, so we have to
// transform our coordinates
map.setCenter(new OpenLayers.LonLat(10.2, 48.9).transform(
new OpenLayers.Projection("EPSG:4326"),
map.getProjectionObject()
), 5);
}
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