Target Elements that DO NOT HAVE SPECIFIC PARENT
by bizamajig
HTML
<ul>
<li><a href="/artists/gil_elvgren/activity_stream"><div>Activity Stream</div></a></li>
<li><a href="/artists/gil_elvgren/likes"><div>Likes</div></a></li>
<li><div>Favorites</div></li>
<li><div>Follows</div></li>
<li><a href="/artists/gil_elvgren/sketchbook_comments"><div>Whiteboard</div></a></li>
</ul>
CSS
.current { color: cyan; }
JavaScript
$('div').not( function () {
// return $(this).children('a').length;
return $(this).parent('a').length || $(this).parent().parent('a').length;
}).addClass('current');