title: How to temporally hide the Navigation Bar from Firefox extension?
body: <p>I'm developing an extension for Firefox for Android and I need to programatically open a new tab with no navigation bar. I know I can do it with JS with <code>window.open("http://www.google.com", "mywindow", "location=0,toolbar=0");</code> but this time I need to disable it another way, because the tab is being opened via <a href="https://developer.mozilla.org/en-US/Add-ons/Firefox_for_Android/API/BrowserApp/loadURI" rel="nofollow">loadURI</a>. So, the thing is, how can I change the toolbar visibility once loadURI was executed?</p>
  
  <p>Thanks in advance!</p>