static function isGrader($userid, $groupid)
{
$qry = 'SELECT gg.userid' . ' FROM grades_group gg' . ' where gg.userid=' . $userid . ' and gg.groupid =' . $groupid;
$grGroup = new Gradesgroup();
$grGroup->query($qry);
if ($grGroup->fetch()) {
$result = true;
} else {
$result = false;
}
$grGroup->free();
return $result;
}
