<p>
<input name="radios1" type="radio" id="radios1-1" checked />
<label for="radios1-1">One</label>
</p>
<p>
<input name="radios1" type="radio" id="radios1-2" />
<label for="radios1-2">Two</label>
</p>
<p>
<input name="radios1" type="radio" id="radios1-3" disabled />
<label for="radios1-3">Three</label>
</p>