OpenLayers.Layer.TMS

The TMS layer allows one to connect to a TMS -- Tiled Map Service -- server to obtain images. 

* Constructor
  OpenLayers.Layer.TMS(name, url, options) -- URL is the base URL to the layer. Options is a set of options, extending the parameters of the layer.

* Methods
  getURL({OpenLayers.Bounds|bounds}) -- {String} -- Returns a TMS URL for the given bounds based on the properties of the layer.
  All other methods are inherited from {OpenLayers.Layer.Grid}
  
* Options 
  tileOrigin -- The tileOrigin option will allow you to set your tileOrigin to something other than the lower left extent of your map. 
  layername -- Name of the layer in the TMS request.
  type -- The extension images have.