title: Radiobutton group, change event?
body: <p>I have a group of radiobuttons generated by cakephp.</p>
  
  <pre><code>&lt;input type="radio" name="data[hexInput]" id="HexInput1" value="h1"&gt;
  &lt;input type="radio" name="data[hexInput]" id="HexInput2" value="h2"&gt;
  &lt;input type="radio" name="data[hexInput]" id="HexInput3" value="h3"&gt;
  </code></pre>
  
  <p>Is there some way to check if one of the radiobuttons in the group was checked? By a change event or something?</p>
  
  <p>I know how to do this with a specific button but not with the group. For a specific button i use this Js helper:</p>
  
  <pre><code>$this-&gt;Js-&gt;get('HexInput2')-&gt;event('change', $this-&gt;Js-&gt;request(array(
              'controller' =&gt; 'designer',
              'action' =&gt; 'test',
                  ), array(
              'update' =&gt; '#resultDiv',
              'async' =&gt; true,
              'method' =&gt; 'post',
              'dataExpression' =&gt; true,
              'data' =&gt; $this-&gt;Js-&gt;serializeForm(array(
                  'isForm' =&gt; false,
                  'inline' =&gt; true
              )) 
         ))
  );
  </code></pre>