How to hide a div if the selected radio of a radio button group has a class other than "red"?

```
<form>
  <input class="blue" name="model" value="XTC_01" type="radio">
  <input class="red"  name="model" value="XTC_02" type="radio">
  <input class="red"  name="model" value="XTC_03" type="radio">
  <input class="blue" name="model" value="XTC_04" type="radio">
</form>

<div id="red_info">Hidden if selected radio class is not "red".</div>

```

Thanks for Your advice.