(function () {
  function isNotSupportedBrowser() {
    var msie = window.navigator.userAgent.indexOf("MSIE"); // IE 10 or below
    var trident = window.navigator.userAgent.indexOf("Trident/"); // IE 11
    return msie > 0 || trident > 0;
  }

  if (isNotSupportedBrowser()) {
    document.getElementById("notification-old-browser").style.display = "block";
  }
})();