OpenLayers.Layer.Google

The Google Layer in OpenLayers allows you to include Google Maps functionality in your OpenLayers maps. In order to use the Google Layer, you must first obtain an API key for Google Maps, and include the Google Maps API script in your page. Once you have done this, 

* Constructor
  OpenLayers.Layer.Google(name, options?) -- Constructor for Google layer. Accepts name and options.

* Methods
  getOLLonLatFromGLatLng(GLonLat) -- {OpenLayers.LonLat} -- Convert from GLatLon to OpenLayers LonLat
  getGLatLngFromOLLonLat({OpenLayers.LonLat|lonlat}) -- GLatLon -- Convert From OpenLayers LonLat to GLatLon
  getOLPixelFromGPoint(GPoint) -- {OpenLayers.Pixel} -- Convert from GPoint to OpenLayers.Pixel
  getGPointFromOLPixel({OpenLayers.Pixel|pixel}) -- GPoint -- Create GPoint from OpenLayers Pixel.
  
* Parameters
  type -- one of G_NORMAL_MAP, G_SATELLITE_MAP, G_HYBRID_MAP, used to choose the type of map to display. (See <a href="http://www.google.com/apis/maps/documentation/reference.html#GMapType">GMapType in the Google documentation</a> for more.)