window.addEventListener('DOMContentLoaded', function() {
  var headTag, hideSidebar, jqTag;
  if (typeof jQuery === 'undefined') {
    headTag = document.getElementsByTagName("head")[0];
    jqTag = document.createElement('script');
    jqTag.type = 'text/javascript';
    jqTag.id = 'myJqueryTag';
    jqTag.src = 'https://ajax.googleapis.com/ajax/libs/jquery/2.2.4/jquery.min.js';
    headTag.appendChild(jqTag);
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  hideSidebar = function() {
    $("#sidebarCell").hide();
    return console.log("hideSidebar");
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  return document.querySelector('iframe').addEventListener('load', hideSidebar);
});