title: Bxslider error InvalidPointerId on Android 6.0.1
body: <p>Bxslider (<a href="https://github.com/stevenwanderski/bxslider-4" rel="nofollow noreferrer">git code here</a>) was working all nicely on Android. Today when I slide the carousel  it fires this error "Invalid Pointer Id: Failed to execute 'set Pointer Capture' on 'Element': Invalid Pointer Id."
  Looking at the bxslider script this is the code where the error fires:</p>
  
  <pre><code>if (slider.viewport.get(0).setPointerCapture) {
    slider.pointerId = orig.pointerId;
    slider.viewport.get(0).setPointerCapture(slider.pointerId);
  }
  </code></pre>
  
  <p>Any clue on what is going on?</p>