title: two sided multi select that works with Rails 3
body: <p>I need a two sided multi select box in Rails (3.2.8), just like here:</p>
  
  <p><a href="http://www.stevefenton.co.uk/Content/Jquery-Two-Sided-Multi-Selector/" rel="nofollow">http://www.stevefenton.co.uk/Content/Jquery-Two-Sided-Multi-Selector/</a></p>
  
  <p>However, I can't get this to work with Rails and it is so poorly documented I have to give up on that one. (It shows but the buttons don't work, even on a fresh Rails app)</p>
  
  <p>Does anyone know of a similar jquery or gem solution that DOES work with rails??</p>
  
  <p>Many thanks!</p>