Variare più record contemporaneamente!!!

<?php
include 'body.php';
?>
<form align='' action='situazione.php?reg=1' method='POST'>
<font align='left' color="black" size="5">
<b>Storico cliente </b></font>


Cod id <input type='text' name='txt'><input style='color:black;background-color:#33FF33;' type='submit' value='Cerca'>
</form> 


<?php 
include_once ("config.php");  
include_once ("connect.php");  

$txt = $_POST['txt'];

$result = mysql_query("SELECT * FROM TABELLA WHERE id LIKE '$txt' OR id_venditore LIKE '$txt' OR venduto_a LIKE '$txt' ORDER BY venduto_a='$txt' , id_venditore='$txt' , id='$txt'");
$num=mysql_numrows($result);

   

echo "<table align='center' bgcolor='#E0FFFF' border='1' height='' width='100%' cellpadding='0' cellspacing='0'>"; 
echo "<tr> 
<th align='center'><font size='1'>Cod.Id1</th>
<th align='center'><font size='1'>Cod.Id2</th>
<th align='center'><font size='1'>Data</th>
<th align='center'><font size='1'>Nome</th>
<th align='center'><font size='1'>Cognome</th>
<th align='center'><font size='1'>Venditore</th>
<th align='center'><font size='1'>Descrizione</th>
<th align='center'><font size='1'>Scadenza oggetto</th>
<th align='center'><font size='1'>Prezzo</th>
<th align='center'><font size='1'>Prezzo riserva</th>
<th align='center'><font size='1'>Q.ta'</th>
<th align='center'><font size='1'>%</th>
<th align='center'><font size='1'>Acquirente</th>
<th align='center'><font size='1'>Pagamento</th>

</tr>"; 
 
while($row = mysql_fetch_array( $result )) { 
    $id=$row['id'];
    echo "<tr>
    
    <td align='center' width=''><font size='2'><a title='MODIFICA RECORD' target='db2' href='modifica.php?mod=$id\' target='db'><input style='color:black;background-color:yellow;' type='submit' value='$id'></a></td>
 
 <td align='center' width=''><font size='2'><form title='RIASSUNTIVO' align='center' action='situazione.php?reg=1' method='POST'><input style='color:black;background-color:#33FF33;' type='submit' name='txt' value='$id' ></form></td>
 
    <td align='center'><font size='2'>".$row['data']."</td>
    <td align='center'><font size='2'>".$row['nome']."</td>
    <td align='center'><font size='2'>".$row['cognome']."</td>
    <td align='center'><font size='2'><form align='center' action='situazione.php?reg=1' method='POST'><input style='color:black;background-color:#33FF33;' type='submit' name='txt' value='".$row['id_venditore']."'  title='RIASSUNTIVO'></form></td>

    <td align='center'><font size='2'>".$row['descrizione']."</td>
    <td align='center'><font size='2'>".$row['scadenza_oggetto']."</td>
    <td align='center'><font size='2'>".$row['prezzo']."</td>
    <td align='center'><font size='2'>".$row['prezzo_riserva']."</td>
    <td align='center'><font size='2'>".$row['quantita']."</td>
    <td align='center'><font size='2'>".$row['percento']."</td>
      
    <td align='center'><font size='2'><form align='center' action='situazione.php?reg=1' method='POST'><input style='color:white;background-color:red;' type='submit' name='txt' value='".$row['venduto_a']."' title='RIASSUNTIVO'></form></td>
     <td align='center'><font size='2'>".$row['pagamento']."</td></tr>";
   
             
}  
echo "Record $num\n";
echo "<form align='center' action='eti2.php?reg=1' method='POST' target='_blank'>
Stampa le etichette del cliente numero<input style='color:black;background-color:azure;' type='submit' name='txt' value='$txt' readonly='readonly'>di oggi! </form>\n";
echo "</table>"; 

?>


</td>
</tr>
</table>
</body>
 </html>

<select style="color: rgb(204, 0, 0);" name="pagamento"><option value="<?php echo $pagamento;?>"><?php echo $pagamento;?></option><option value=""></option>
<option value="pagato <?php echo $b;?>">pagato <?php echo $b;?></option>
</select>