echo $b->uri('/site.js');
outputs "/site.js?1678242"
echo $b->uri('/scriptaculous.js?load=effects');
outputs "/scriptaculous.js?load=effects&1678242"
echo $b->uri('/site.js');
outputs "/site.js?1678242"
echo $b->uri('/scriptaculous.js?load=effects');
outputs "/scriptaculous.js?load=effects&1678242"