title: How to hide address bar (Navigation bar) for Firefox v29.0?
body: <p>I've been using Vimperator in Firefox for a long time. I'd like to hide or remove the address bar to get a bigger main window.  However, after update to v29.0, the address bar cannot be hidden or removed.  How can I do that?  Or which add-in can help?</p>
  
  <p>Here is the screenshot of my older version (before v29.0); you can see the address bar has been hidden:</p>
  
  <p><img src="https://raw.githubusercontent.com/Marslo/BrowserConfig/6bce1b457239c106d5ce0d63240a30b3e38dd6c3/Screenshots/firefox_addons.png" alt="Firefox screenshot"></p>