$select =  "SELECT idr, idc, id, name, country, razdel, date, see" ;
$from   =  " FROM main, razdel, country" ;
$where  =  " WHERE  main.idrm=razdel.idr and main.idcm=country.idc" ;

if ($idrf !=  "") {  $where .= "  AND idr = $idrf ";}
if ($idcf != "  ") { $where .= "   AND idc = $idcf ";}
if ($see != "  ") { $where .= "   AND see = $see";}

$cats = mysql_query($select . $from . $where);
while ($joke = mysql_fetch_array($res)) {.... и т.д.

 and main.discriptions LIKE '%$namef%' OR main.name LIKE '%$namef%'