title: Good Cross-browser tri-state checkbox?
body: <p>Hey guys, I'm looking for a nice tri-state checkbox controller in JS ? 
  Got anything to recommend me?</p>
  
  <p>The states I'm looking for are </p>
  
  <ol>
  <li>Checked</li>
  <li>Unchecked</li>
  <li>Indifferent (Was never checked/unchecked)</li>
  </ol>