I would like to know which element is clicked so I can change its CSS class. Here is the code:

```
<script type="text/javascript">
      $(function() {
       $("#radio").buttonset();
      });
</script>

```

---

```
<div id="radio">
   <input type="radio" id="radio1" name="radio" /><label for="radio1">Choice 1</label>
   <input type="radio" id="radio2" name="radio" checked="checked" /><label for="radio2">Choice 2</label>
   <input type="radio" id="radio3" name="radio" /><label for="radio3">Choice 3</label>
</div>

```