                   .addSize([320, 100], [[320, 100], [320, 50]]) //Mobile
                                              .build();
                                          gptAdSlots[16] = googletag.defineSlot(dfp_sitePage, [320, 100], 'adpos_mid')
                                              .defineSizeMapping(sizeMappings['adpos_mid'])
                                              .setTargeting('pos',['mid'])
                                              .setTargeting('moat','adpos_mid')
          