;(function () {
  var tzKfVersion = '2022.8.30.1';
  var script = document.createElement('script');
  var baseUrl = window.tzKfDebug ? 'https://localhost:3000' : 'https://tz-widget.b2b168.net'
  var encoding = document.characterSet.toLowerCase() !== 'utf-8' ? 'gbk': 'utf8';
  script.src = baseUrl + '/kf/vclient/fixedicon.' + encoding + '.js?v=' + tzKfVersion;
  script.async = true;
  document.head.appendChild(script);
})();