In the template register.phtml I added an input type radio for some terms and condition agreements.
This one is required.

I didn't success to use the javascript Magento’s frontend validation. I add all sort of classes but nothing worked.

Is Someone knows how to do please ? thanks

Here the html

```
<div class="field radiobox">
    <div class="input-box">
        <input type="radio" name="accept" title="<?php echo $this->__('I Agree to our Terms & Conditions') ?>" id="accept"  class="radio required-entry validate-one-required-by-name validation-passed validation-failed" >
        <label for="accept" class=required" ><?php echo $this->__('I Agree to our Terms & Conditions') ?></label>
    </div>
</div>
<script type="text/javascript">
    //<![CDATA[
        new Varien.FileElement('accept');
    //]]>
</script>

```