public function getId($category_alias = null)
{
$db = YireoHelper::getDBO();
if (YireoHelper::isJoomla15()) {
$query = "SELECT `id` FROM `#__categories` WHERE `alias`=" . $db->quote($category_alias) . " AND `section`='com_simplelists' LIMIT 1";
} else {
$query = "SELECT `id` FROM `#__categories` WHERE `alias`=" . $db->quote($category_alias) . " AND `extension`='com_simplelists' LIMIT 1";
}
$db->setQuery($query);
return $db->loadResult();
}