menu item advanced

hi ,
i refer to that link
forum link
and actually use following script
if($menuItem->getLinkType() == 'Internal')

{

global $tables_data;

$table=$menuItem->getTable();

include_once(getabspath("include/".GetTableURL($table)."_settings.php"));

$table=GetOriginalTableName($table);
if (($table)==("tbltodo"))

{

$rs=CustomQuery("select count() as c1 from container where visible='Yes'" );

$data = db_fetch_array($rs);

$menuItem->setTitle($menuItem->getTitle() . " (". $data["c1"] . ")");

}
else

{

$rs=CustomQuery("select count() as c1 from " . AddTableWrappers($table));

$data = db_fetch_array($rs);

$menuItem->setTitle($menuItem->getTitle() . " (". $data["c1"] . ")");

}
}

return true;
i get following error
Fatal error: Call to undefined function GetOriginalTableName() in C:\xampp\htdocs\todo\include\events.php on line 82
can you help?
thanks