title: bootstrap Accordion collapse multiple children?
body: <p>How to create a bootstrap accordion that when collapsed, will collapse two or more "children" accordions?
  (as opposed to just one as the website demo does below).
  <br><br>
  <a href="http://twitter.github.com/bootstrap/javascript.html#collapse" rel="nofollow">http://twitter.github.com/bootstrap/javascript.html#collapse</a></p>