(function () {
  var _eventsStack = {};
  window.Events = {
    emit: function (eventName, message) {
      if (!_eventsStack.hasOwnProperty(eventName)) {
        _eventsStack[eventName] = [];
      }
      _eventsStack[eventName].forEach(function (fn) {
      	fn(message != undefined ? message : {});
      });
    },
    on: function (eventName, fn) {
      if (!_eventsStack.hasOwnProperty(eventName)) {
        _eventsStack[eventName] = [];
      }
      _eventsStack[eventName].push(fn);
    },
    off: function (eventName, fn) {
      console.log(_eventsStack)
      _eventsStack[eventName].splice(_eventsStack[eventName].indexOf(fn) - 1, 1);
    }
  };
})();