CMedialibItem::GetSourceId

static function GetSourceId($id)
{
	global $DB;
	$strSql = 'SELECT SOURCE_ID
		FROM b_medialib_item
		WHERE ID='.intval($id);
	$r = $DB->Query($strSql, false, "File: ".__FILE__."
Line: ".__LINE__);
	if ($res = $r->Fetch())
		return $res['SOURCE_ID'];

	return false;
}