// Tracking function with a queue property, supports one subscriber
  Skubacz.tracking = (function () {
    var q = [], l = null
    var f = function (event) {
      if (l) {
        l(event)
      } else {
        q.push(event)
      }
    }
    f.q = q
    // subscribe and consume the queue
    f.subscribe = function (listener) {
      l = listener
    }
    // Backwards compatibility in AM (can be removed after theme upgrade)
    f.startTracking = function(clientId) {
      f({ tag: 'InitActiveMenu', clientId: clientId});
    }
    return f
  })()