title: Finding all radio buttons in 'unknown' form
body: <p>I am trying to write javascript code that will find all radio groups in a form and check to make sure one is clicked in each group.  This is not hard if you know the form and group names.  What I would like to do is create some code that could be called using 'onsubmit' from any form.  I want to keep the code generic enough to use without customization for each form.</p>
  
  <p>Thanks</p>