title: javascript window.open can't go back to parent folder
body: <p>I'm trying to open a pdf that is located in the parent folder. I have no problem opening a pdf in the current directory or a child directory. However can't load the parent folder.</p>
  
  <pre><code>aLink.click(function(){
       var pdf = "/../test.pdf";
       window.open(pdf);
  });
  </code></pre>
  
  <p>after running it we get Cannot GET /test.pdf.
  Seems like it doesn't recognize /../ (accessing parent directory) Any help?</p>