code: function(scales) {
          if(scales == null) {
              return;
          }
          var resolutions, i, len;
          len = scales.length;
          resolutions = new Array(len);
          for(i=0; i<len; i++) {
              resolutions[i] = OpenLayers.Util.getResolutionFromScale(
                  scales[i], this.units);
          }
          return resolutions;
      }
docs: Method: resolutionsFromScales
  Derive resolutions from scales.
  
  Parameters:
  scales - {Array(Number)} Scales
  
  Returns
  {Array(Number)} Resolutions