Seeking Alpha's "roadblock" script

(function(w) {
  var getParam = function (name) {
    name = name.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
    var regex = new RegExp("[\\?&]" + name + "=([^&#]*)"),
        results = regex.exec(w.location.search);
    return results === null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
  },
  rc = function(n) {
    var c = document.cookie.match(new RegExp('(^|;)\\s*' + escape(n) + '=([^;\\s]*)'));
    return (c ? unescape(c[2]) : null);
  },
  paginate = function () {
    if (!w.aConf.pagination.singlePage) {
      document.write('<style>' + '.sa-a #a-cont .p {display:none;} .sa-a #a-cont .p.p' + page + ' {display:block;}' + '</style>');
    }
  },
  unblock_authors_pick = "false",
  noRBCheck = function(){
    return !!(log || fromPartner || fromInStream || !fromInsight || unblock_authors_pick === "true")
  },
  noRbStrategy = function () {
    noRBandPagination = (noRBCheck() || pages === 1 );
    w.aConf.pagination = {
      limit: pLimit,
      pages: pages,
      page: page,
      singlePage: noRBandPagination,
      singlePageBtn: false
    };

    w.aConf.roadblock = {
      timed: false,
      active: false,
      type: 'no_rb_strategy'
    };
  },
  softRbStrategy = function () {
    var hideRb = noRBCheck();

    w.aConf.pagination = {
      limit: 100,
      pages: pages,
      page: page,
      singlePage: hideRb,
      singlePageBtn: false
    };

    w.aConf.roadblock = {
      timed: !hideRb,
      active: !hideRb,
      type: 'soft_rb_strategy'
    };
  },
  hardRbStrategy = function () {
    firstArticle = parseInt(store.getItem('skipped_rb'), 10) === id;
    noRBandPagination = (noRBCheck() || pages === 1 );
    timedRBNotActive = noRBandPagination || (firstArticle && page === 1);
    rbNotActive = noRBandPagination || page < pLimit;

    w.aConf.pagination = {
      limit: pLimit,
      pages: pages,
      page: page,
      singlePage: noRBandPagination,
      singlePageBtn: false
    };

    w.aConf.roadblock = {
      timed: !timedRBNotActive,
      active: !rbNotActive,
      type: 'hard_rb_strategy'
    };
  };

  var pLimit = 2,
    pages = 6,
    log = rc('user_id'),
    p = parseInt(getParam('page'), 10) || 1,
    page = (p < 1) ? 1 : p,
    id = 4162910,
    source = rc('_sasource') || getParam('source') || '',
    store = w.sessionStorage,
    ls = w.localStorage,
    fromPartner = (/cnbc|marketwatch|aoldf|msn|nasdaq|bloomberg|partner_djnw|partner_thomsonreuters/).test(source),
    fromInStream = /instream/.test(source),
    fromInsight = true;

  try {
    if (!store.getItem('skipped_rb')) {
      store.setItem('skipped_rb', id);
    }
  } catch (e) {
    // do nothing
  }

  if (pages === 2) {
    pages = 3;
  }

  w.aConf = {};
  var firstArticle,
    noRBandPagination,
    timedRBNotActive,
    rbNotActive,
    rbType = (ls.getItem('roadblock_calc_type') || 'no_rb_strategy').trim();

  switch (rbType) {
    case 'no_rb_strategy':
    case 'control':
      noRbStrategy();
      break;
    case 'soft_rb_strategy':
      softRbStrategy();
      break;
    case 'hard_rb_strategy':
      hardRbStrategy();
      break;
    default:
      noRbStrategy();
      break;
  }

  paginate();

}(window));