var dsGalleries = new Spry.Data.XMLDataSet(pathToGalleries + "galleries.xml", "galleries/gallery");
      var dsGallery = new Spry.Data.XMLDataSet(pathToGalleries + "{dsGalleries::@base}{dsGalleries::@file}", "gallery");
      var dsPhotos = new Spry.Data.XMLDataSet(pathToGalleries + "{dsGalleries::@base}{dsGalleries::@file}", "gallery/photos/photo");