code: function(name, url, lzd, zoomLevels, params, options) {
          this.lzd = lzd;
          this.zoomLevels = zoomLevels;
          var newArguments = [];
          newArguments.push(name, url, params, options);
          OpenLayers.Layer.Grid.prototype.initialize.apply(this, newArguments);
          this.params = OpenLayers.Util.applyDefaults(
              this.params, this.DEFAULT_PARAMS
          );
      }
docs: Constructor: OpenLayers.Layer.WorldWind
  
  Parameters:
  name - {String} Name of Layer
  url - {String} Base URL
  lzd - {Float} Level zero tile size degrees
  zoomLevels - {Integer} number of zoom levels
  params - {Object} additional parameters
  options - {Object} additional options