[jQuery] validate radios

[jQuery] validate radios

Hi jQuery gurus!, this my very first post here.
I have a very trivial question for you, I guess.
How to validate this two radio buttons? - thanks.
[html]
<li><input type="radio" name="p3" value="1" />Excelente</li>        
<li><input type="radio" name="p3" value="2" />Muy Buena</li>        
<li><input type="radio" name="p3" value="3" />Buena</li>        
<li><input type="radio" name="p3" value="4" />Regular</li>        
<li><input type="radio" name="p3" value="5" />Mala</li>        
<li><input type="radio" name="p3" value="6" />Muy Mala</li>    
<li><input type="radio" name="p4" value="1" />Excelente</li>        
<li><input type="radio" name="p4" value="2" />Muy Buena</li>        
<li><input type="radio" name="p4" value="3" />Buena</li>        
<li><input type="radio" name="p4" value="4" />Regular</li>        
<li><input type="radio" name="p4" value="5" />Mala</li>        
<li><input type="radio" name="p4" value="6" />Muy Mala</li>
[/html]
--
juan pablo aqueveque
www.juque.cl
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