title: On select / click event of a Ext.RadioGroup
body: <p>Again Im probably being stupid, I am having trouble with listener events of objects.</p>
  
  <p>I have:</p>
  
  <pre><code>new Ext.form.Radio({
                      boxLabel:'Yes',
                      id: 'car_price_type_yes',
                      name: 'car_price_type',
                      value: 1,
                      listeners: {
                          select: function (e) {
                              alert('x');
                          }
                      }
                  })
  </code></pre>
  
  <p>I am trying to get the alert to appear when I click the radio button.</p>
  
  <p>Thanks.</p>