{% if site.rocketchat.url %} <script type=“text/javascript”>

(function (w, d, s, u) {
  w.RocketChat = function (c) { w.RocketChat._.push(c) }; w.RocketChat._ = []; w.RocketChat.url = u;
  var h = d.getElementsByTagName(s)[0], j = d.createElement(s);
  j.async = true; j.src =
    '{{ site.rocketchat.url }}/packages/rocketchat_livechat/assets/rocketchat-livechat.min.js?_=201702160944';
  h.parentNode.insertBefore(j, h);
})(window, document, 'script', '{{ site.rocketchat.url }}/livechat');

</script> <br /> {% endif %}