I'm looking for how to create two listboxes with the left, right, up, and down arrows between them....

Hi,

  I'm looking for a way to create something similar to this
http://tapestry.apache.org/tapestry4/images/examples/workbench.png
using rails. I'm still learning ruby and rails so maybe I don't know
where to look for this type of info. Any pointers or links?

Thanks,
  J