title: How facebook changes address bar
body: <blockquote>
    <p><strong>Possible Duplicate:</strong><br>
    <a href="http://facebook.stackoverflow.com/questions/5525636/html-changing-the-url-without-reloading-the-page">HTML: Changing the URL without reloading the page?</a>  </p>
  </blockquote>
  
  
  
  <p>Facebook can manipulate url bar by javascript without accessing to the page,</p>
  
  <p>as example go to facebook home just open a photo you will see your url will get changed to something like </p>
  
  <pre><code>photo.php?fbid=4123..
  </code></pre>
  
  <p>they load the page by ajax but  can change address bar?</p>
  
  <p>i'dont talk about url hash #photo/id_123414</p>