function lookupMapKey( domain ) {
  if (domain == '') return;

// Get rid of any leading www
  var ptn = '^www\.';
  var ptnRegExp = new RegExp(ptn, "i");
  domain = domain.replace(ptnRegExp, "");

  var mapKeyHash = {
    'guideguide.com':          'ABQIAAAAJiKQAkpZKtlGVXeOkEuznxT8mFFhbyTj_Y2dWWYFb7LF0rxRqhRsTTRuPVg0W-FKRPzsWredDBuw5g',
    'meinguide.com':           'ABQIAAAAJiKQAkpZKtlGVXeOkEuznxQswXRXhBlcNaiWvgtueQwkvsqHtBRNDMjtAf6lepV_ZIGOAfzr1kWRaA',
    'mein.handwerkguide.com':  'ABQIAAAAJiKQAkpZKtlGVXeOkEuznxSzjpjWtuo_SjjZUTj31OTXRAqzgRT00t58XnQrf_wgmYG-hNJcebj3YQ',
    'handwerkguide.com':       'ABQIAAAAJiKQAkpZKtlGVXeOkEuznxTmEQ0g2F5GRYr0M5UfLfrOSHxh2RTKeC8G5Xg9tU5Tn_v_iCCIE1_CaQ',
    'elektroguide.com':        'ABQIAAAAJiKQAkpZKtlGVXeOkEuznxTJ_lEtgltCNKS30nja3asGasNS0RSvF_2beHN8KTY_Y1ELWcNnwI7Zbw',
    'sanitaerguide.com':       'ABQIAAAAJiKQAkpZKtlGVXeOkEuznxTnIpcJoUpVnw-PZKXoqt-CZZ6xORQ_qfKbv_zwnkYKeOwrbrrKxA-QJw',
    'bauunternehmenguide.com': 'ABQIAAAAJiKQAkpZKtlGVXeOkEuznxR_RkBJEuORuQbpgmqIQQg3Hc9KbBSRHHKZXk764x-CD8BqXjcY_uDHng',
    'schreinerguide.com':      'ABQIAAAAJiKQAkpZKtlGVXeOkEuznxTw7EC2bbOXQdiY3ADal23EINgeVhSOdjVm45mTcu32sGWNJ8GKlCWCnw',
    'schreinerguide.mobi':     'ABQIAAAAJiKQAkpZKtlGVXeOkEuznxQTVMgzH2Hi2GGOr8cPnPSZizdp_hRIuVOFCGdOptpy-PyZYMtJkaHg9w',
    'metallbauguide.com':      'ABQIAAAAJiKQAkpZKtlGVXeOkEuznxSh91T05fGWSZeB9jC8frzX085KgRRJvkBktGx0v-CkwyaTGQ3ribSZ9g',
    'dachdeckerguide.com':     'ABQIAAAAJiKQAkpZKtlGVXeOkEuznxRJ0S2_jOpSuku2--7cRhXzzUDqFhQjsz-cbFDBrvtPrfkiyGqkq57pNA',
    'zimmereiguide.com':       'ABQIAAAAJiKQAkpZKtlGVXeOkEuznxRdUJuOsLGz6L5IJvM5MHcK3qboIRRVD3Sytqg307CwBWOvIRcZ0419Uw',
    'kfz-werkstattguide.com':  'ABQIAAAAJiKQAkpZKtlGVXeOkEuznxRdvlPt_RMxBzeiRL_dwU8LJzVOFRQpW5i14iHSJInvV6jnGqPOGmyt2g',
    'logistikguide.com':       'ABQIAAAAJiKQAkpZKtlGVXeOkEuznxQsQW46EPuRkcWcUut8dfAg97Dz0xQjqD8bC40vWIOj3oPfUzis15-R4Q',
    'generalguide.com':        'ABQIAAAAJiKQAkpZKtlGVXeOkEuznxTmEQ0g2F5GRYr0M5UfLfrOSHxh2RTKeC8G5Xg9tU5Tn_v_iCCIE1_CaQ',
    'gourmetguide.com':        'ABQIAAAAJiKQAkpZKtlGVXeOkEuznxQbwuE8ICeMDjILdv_jU4G78VjjChQueAbRW4kQIkIeH4RAPy8Gp4GguA',
    'firmenguide.com':         'ABQIAAAAJiKQAkpZKtlGVXeOkEuznxQgRtBNElWzkXct5UuWTUMzi2TvohScQUQ4wFF2skdayjWnRwhQ-K-23Q',
    'orchardsolutions.com':    'ABQIAAAAJiKQAkpZKtlGVXeOkEuznxS1wDS8Fx1fBdsG2ESyJ_uSpqPWABRPftWyUD7af9Uh2XMMtqdp3p5H7w'
  };

  return mapKeyHash[domain];
}