pubads());
sizeMappings['adpos_bottomfixed'] = googletag.sizeMapping()
                                              .addSize([728, 90], [9,7]) //Desktop
                                              .addSize([768, 200], [728, 90]) //Tablet
                                              .addSize([0, 0], [320, 50]) //Mobile
                                              .build();
                                      gptAdSlots[29] = googletag.defineSlot(dfp_sitePage, [320, 50], 'adpos_bottomfixed')
   