code: function(name, url, size, options) {
  
          // initilize the Zoomify pyramid for given size
          this.initializeZoomify(size);
  
          OpenLayers.Layer.Grid.prototype.initialize.apply(this, [
              name, url, size, {}, options
          ]);
      }
docs: Constructor: OpenLayers.Layer.Zoomify
  
  Parameters:
  name - {String} A name for the layer.
  url - {String} - Relative or absolute path to the image or more
  precisly to the TileGroup[X] directories root.
  Flash plugin use the variable name "zoomifyImagePath" for this.
  size - {<OpenLayers.Size>} The size (in pixels) of the image.
  options - {Object} Hashtable of extra options to tag onto the layer