Groups
\r\n";	
	return $o;
}
function expand_groups($a) {
	if(! (is_array($a) && count($a)))
		return array();
	$groups = implode(',', $a);
	$groups = dbesc($groups);
	$r = q("SELECT `contact-id` FROM `group_member` WHERE `gid` IN ( $groups )");
	$ret = array();
	if(count($r))
		foreach($r as $rr)
			$ret[] = $rr['contact-id'];
	return $ret;
}