code: function createPhotoUrl(id, farm, server, secret, size) {
  		size = (size) ? '_' + size : '';
  		return 'https://farm' + farm + '.staticflickr.com/' + server + '/' + id + '_' + secret + size + '.jpg';
  	}
docs: See: https://www.flickr.com/services/api/misc.urls.html