code: function filterElement(flJson){
    var returnJson = {"photo":{}};
    
    returnJson.photo.title       = flJson.photo.title;
    returnJson.photo.description = flJson.photo.description;
    returnJson.photo.farm        = flJson.photo.farm;
    returnJson.photo.id          = flJson.photo.id;
    returnJson.photo.media       = flJson.photo.media;
    returnJson.photo.secret      = flJson.photo.secret;
    returnJson.photo.server      = flJson.photo.server;
    returnJson.photo.urls        = flJson.photo.urls;
    
    return returnJson;
  }
docs: return used element