sub get_meta_keywords {
  my ($script,$parameter) = @_;

  $sql_stmnt = "SELECT meta_keyword
                FROM site_meta_keywords 
                WHERE script = ?
                AND parameter = ?";
  $sth = $dbh->prepare($sql_stmnt);
  $sth->execute($script,$parameter);    
  my $keywords = $sth->fetchall_arrayref();
  $sth->finish();
    
  my $meta_keywords = join(', ', @$keywords);
    
  return $meta_keywords;
}