title: ipython notebook missing header/toolbar/menubar
body: <p>Although others are looking for ways to hide the menubar or header of ipython notebook, I found my ipython notebook comes with no header, no toolbar, no menubar, and I tried to add the following script to the <code>custom.js</code>, but still, nothing shows up</p>
  
  <pre><code>$([IPython.events]).on("app_initialized.NotebookApp", function () {
  $('div#header').show();
  $('div#maintoolbar').show();
  $('#header-container').show();
  });
  </code></pre>
  
  <p>I tried Ipython 3.0, 3.2, Firefox, Chrome, none helps. I am using Python3.4, 64bit on Windows 7. </p>
  
  <p>I also enclosed a screenshot to show what I have on my notebook.
  <img src="https://i.stack.imgur.com/4Mg55.jpg" alt="ipython notebook no header"></p>