An opening in a work surface shall be covered or shall have a guardrail around its perimeter. <a href="http://www.viagrabelgiquefr.com/sildenafil-soft-tablets-100mg" rel="nofollow" target="_blank"><a href="http://www.viagrabelgiquefr.com/sildenafil-soft-tablets-100mg" rel="nofollow" target="_blank">http://www.viagrabelgiquefr.com/sildenafil-soft-tablets-100mg</a></a>