where($Ma,$m);}function
where_link($t,$c,$Y,$Yd="="){return"&where%5B$t%5D%5Bcol%5D=".urlencode($c)."&where%5B$t%5D%5Bop%5D=".urlencode(($Y!==null?$Yd:"IS NULL"))."&where%5B$t%5D%5Bval%5D=".urlencode($Y);}function