title: Does slip.js not working on IE9?
body: <p>Has anyone used slip.js ( <a href="https://github.com/pornel/slip" rel="nofollow">link to slip.js</a> ) in IE9 browser?
  It seems like it is not working there?
  Here is the <a href="https://pornel.net/slip/" rel="nofollow">link</a> to demo.</p>