title: Radio buttons to enable/disable fields
body: <p>I have a form with several groups of radio buttons. Selecting a radio button will enable the <code>text</code> field against it and disable the rest.
  I cant get the field enabled. I have already tried almost every function (next, nextAll, nextUnit, find, findAll, closest ...) but probably not using them properly.</p>
  
  <p>Here is a test with only one group of buttons: <a href="http://jsfiddle.net/QTseK/" rel="nofollow">http://jsfiddle.net/QTseK/</a></p>
  
  <p>Also on page load some of the radio buttons are already checked and what I have to run to get the rest (not checked fields) disabled ?</p>
  
  <p>Thanks</p>