}
#scalars that need to be passed if empty
for my $param (qw( censustract censustract2 )) {
$search_hash{$param} = $cgi->param($param) || ''
if grep { $_ eq $param } $cgi->param;
}
#scalars that need to be passed if empty
for my $param (qw( censustract censustract2 )) {
$search_hash{$param} = $cgi->param($param) || ''
if grep { $_ eq $param } $cgi->param;