title: Show the active site in an iframe as an extension to the parent page url
body: <p>So I'm building this register with a menu to the left and an iframe to the right. Everything works perfectly with the iframe and navigation, but there's one thing missing.</p>
  
  <p>I would like to have the url of the parent page change from: "address.com/help" to for example: "address.com/help/unicorn" when I click on the "unicorn.html" link to the left in the navigation. I.e, make the active site in the iframe become an extension of the parent url.</p>
  
  <p>I've seen the</p>
  
  <pre><code>var iframe     = $('iframe');
  var contentWnd = iframe.attr('contentWindow');
  var url = contentWnd.window.location.href;
  
  window.location.hash = url;
  </code></pre>
  
  <p>on a different thread, but I can't seem to get that to work either.</p>