// Sanity-check: Do we have ref level 0?
$result = SQL_QUERY("SELECT id FROM "._MYSQL_PREFIX."_refsystem WHERE level=0", __FILE__, __LINE__);
if (SQL_NUMROWS($result) > 0) {
// Sanity-check: Do we have ref level 0?
$result = SQL_QUERY("SELECT id FROM "._MYSQL_PREFIX."_refsystem WHERE level=0", __FILE__, __LINE__);
if (SQL_NUMROWS($result) > 0) {