title: Loading bar to next page with bootstrap
body: <p>I have one question:
  On my website, button "submit" starts loading a new page for a limited time (defined in simple form). That's work perfectly.
  I want to do so that when you click "start" bar appears and starts loading for defined time.
  I would like to use an animated loading boostrap:</p>
  
  <pre><code>&lt;div class="progress progress-striped active"&gt;
    &lt;div class="bar" style="width: 40%;"&gt;&lt;/div&gt;
  &lt;/div&gt;
  </code></pre>
  
  <p>How can I do that?
  Javascript? How? :(</p>
  
  <p>Thanks in advance.</p>