I personally use only the W3C online validator. Personally, I would go
with what the W3C validator tells you.
Were there other errors on your page?
Your code looks correct to me.
M
***
List Guidelines: http://webstandardsgroup.org
> 156 E651 The value of the 'for' attribute must match the 'id' of a control
> element in the same form:
> E895 [WCAG v2 1.3.1 (A)] Reference to a missing or incorrect 'id'
> attribute:
>
>
> but the ID for sp3 is there.
>
> http://picasaweb.google.com/lh/photo/P500XXFt39L7a5dCOP1Kxw?feat=directl
