codice:
  	
  	$formNat = "<FORM NAME='frmCfg' METHOD='post' ACTION='index.php'>\n";
    $formNat .= "<SELECT NAME='nat'>";
		$q_nat = $DB->query("select distinct nation from members order by nation");
		while($row_nat =$DB->fetch_row($q_nat))
		{
			$nat = strtoupper($row_nat["nation"]);
  	  $formNat .= "<OPTION VALUE='".$nat."'>".$nat."</OPTION>";
		}
  	$formNat .= "</SELECT></FORM>\n";
  	$formNat .= "<INPUT TYPE='submit' NAME='Submit' VALUE='Modifica!'>\n";