Stuff

<div class="frm-element">
	<div class="frm-label">Rechten:
		<ul class="checklist" id="checklist-1">
			<li><label><input value="15" name="permissions[]" type="checkbox" /> Alle pagina's bekijken</label></li>
			<li><label><input value="15" name="permissions[]" type="checkbox" /> Alle pagina's bekijken</label></li>
			<li><label><input value="15" name="permissions[]" type="checkbox" /> Alle pagina's bekijken</label></li>
			<li><label><input value="15" name="permissions[]" type="checkbox" /> Alle pagina's bekijken</label></li>
			<li><label><input value="15" name="permissions[]" type="checkbox" /> Alle pagina's bekijken</label></li>
		</ul>
		<div class="checkall">
			check: 
			<a href="#" class="all">all</a>
			<a href="#" class="none">none</a>
		</div>
	</div>
</div>

And the piece of javascript:
$('.checkall a.none').click(function() {
	$(this).parents('div.frm-element').each(function() {
		$(this).children('input').each(function() {
			alert('test');
		});
	});
	return false;
});