Map.baseLayers = {
    defaultCentre: [4, 48.8, 5], // centre of W Europe
    m_mousePrefix: "Mercator ",
    mapOptions: {
        projection: "EPSG:900913",
        maxExtent: new OpenLayers.Bounds(-20037508.3427892, -20037508.3427892, 20037508.3427892, 20037508.3427892),
        resolutions: [900,450,225,120,50,25,10,4.5,3,2,1],
        numZoomLevels: 18
    },
    get: function() {
        return [
            new OpenLayers.Layer.Google("Google Streets", { sphericalMercator: true } ),
            new OpenLayers.Layer.Google("Google Hybrid", { type: google.maps.MapTypeId.HYBRID,  sphericalMercator: true } ),
            new OpenLayers.Layer.Google("Google Terrain", { type: google.maps.MapTypeId.TERRAIN,  sphericalMercator: true } )
        ]
    }
}