Ok.
Ecco il codice:
<html>

<?php
define("PAGE_TITLE", "Customer Update");
define("PHP_FILE_NAME", "db2_update2.php")
?>

<head>
<title>Gestione Richieste di Assistenza</title>

<style type="text/css">

body {
background-attachment:"fixed";
background-repeat:"repeat";
cursor: Default; text-decoration: none;
scrollbar-arrow-color: #000000;
scrollbar-base-color: #666666;
scrollbar-dark-shadow-color: #666666;
scrollbar-track-color: #666666;
scrollbar-face-color: #666666;
scrollbar-shadow-color: #999999;
scrollbar-highlight-color: #999999;
scrollbar-3d-light-color: #666666;
backgroundcolor: #666666
}
</style>


<script type="text/javascript">
function conta(val) {
var max=462
if (val.customerSRVMOT.value.length > max) {
val.customerSRVMOT.value = val.customerSRVMOT.value.substring(0,max)
}
}
</script>


<script language="Javascript">

function verificacaratteri(campo)
{
var chiffres = new RegExp("[a-z-A-Z-0-9,-?\/*\r\n.:;*()?!%@#§āųč+ ]");
var verif;
var points = 0;

for(x = 0; x < campo.value.length; x++)
{
verif = chiffres.test(campo.value.charAt(x));
if(campo.value.charAt(x) == "."){points++;}
if(points > 1){verif = false; points = 1;}
if(verif == false){campo.value = campo.value.substr(0,x) + campo.value.substr(x+1,campo.value.length-x+1); x--;}
}

}
</script>

<script type="text/javascript">
window.onload = function() {
document.getElementById('customerSRVMOT').focus();
}
</script>


<script language="javascript">
<!--
function checkForm()
{

if (document.action.customerSRVPER.value==""){
alert("Riferimento obbligatorio");
document.action.customerSRVPER.focus();
return false;
}

if (document.action.customerSRVEMA.value==""){
alert("E-Mail obbligatoria");
document.action.customerSRVEMA.focus();
return false;
}

if (document.action.customerSRVMOT.value==""){
alert("Motivo della chiamata obbligatorio");
document.action.customerSRVMOT.focus();
return false;
}


}
//-->
</script>


</head>

<?php


/* Apro sessioni*/
session_start();

/* Reperimento variabile passata dal chiamante con il metodo GET */

$customerSERCLI = $_SESSION['customerCLSCLI'];
$customerSERSRN = $_SESSION['customerSERSRN'];
$customerSERMOD = $_SESSION['customerSERMOD'];
$customerSERNSP = $_SESSION['customerSERNSP'];
$customerSERPRO = $_SESSION['customerSERPRO'];
$customerSERVRS = $_SESSION['customerSERVRS'];
$customerSERBLD = $_SESSION['customerSERBLD'];
$customerSERASP = $_SESSION['customerSERASP'];
$customerSERREL = $_SESSION['customerSERREL'];
$customerPRODES = $_SESSION['customerPRODES'];

$customerSRVPER = $_GET["customerSRVPER"];
$customerSRVEMA = $_GET["customerSRVEMA"];

$_SESSION['customerSRVPER'] = $customerSRVPER;
$_SESSION['customerSRVEMA'] = $customerSRVEMA;
$_SESSION['customerSRVMOT'] = $customerSRVMOT;

$customerSRVDAT = (date("Y-m-d"));
$customerSRVORA = (date("H.i.s"));
$customerSRVMOT = "";


?>


<body style="overflow:hidden;" bgcolor="#F7F7F7" leftmargin="0" rightmargin="0" topmargin="0">
<table border="1" width="100%" >
<tr>
<td width="150" height="50">SSI </td>

<td>




Gestione Richieste di Assistenza
</td>

</tr>

<tr>
<td width="110">
</td>
<td rowspan="2" valign="top">



<font face="Arial Black"><?php print'Immettere i dati richiesti'; ?></font>






<?php print( date("d M Y H:i:s", time()) ); ?></p>


<?php
print '<form name="action" onsubmit="return checkForm();" action="srvrq19.php?
customerSRVCLI=' . $customerSERCLI . '&customerSRVSRN=' . $customerSERSRN . '
&customerSRVMOD=' . $customerSERMOD . '&customerSRVNSP=' . $customerSERNSP . '
&customerSRVPRO=' . $customerSERPRO . '&customerSRVVER=' . $customerSERVRS . '
&customerSRVBLD=' . $customerSERBLD . '&customerSRVREL=' . $customerSERREL . '
&customerSRVASP=' . $customerSERASP . '&customerSRVPER=' . $customerSRVPER . '
&customerSRVEMA=' . $customerSRVEMA . '&customerSRVMOT=' . $customerSRVMOT . '
" method="POST">';

print '<input type=hidden name="customerSRVCLI" value="'.$customerSERCLI.'" />';

Print 'Server

'.$customerSERSRN.' Model
'.$customerSERMOD.' Partition
'.$customerSERNSP.'
';

Print 'Prodotto

'.$customerSERPRO.' rel.
'.$customerSERVRS.'
'.$customerPRODES.'
';

Print 'Build


'.$customerSERBLD.'
';

Print 'Service release
'.$customerSERREL.'
';

Print 'Service pack

'.$customerSERASP.'
';

print '
';

print 'Riferimento

<input type="text" size="35" maxlength="35" onkeyup=verificacaratteri(this); name="customerSRVPER" value="'.$customerSRVPER.'"/>
';

print 'indirizzo mail

<input type="text" size="80" maxlength="80" onkeyup=verificacaratteri(this); name="customerSRVEMA" value="'.$customerSRVEMA.'"/>
';

?>
<table border="0" width="100%">
<tr>
<td width="129" align="left" valign="top">Motivo</td>
<td>
<td>

<?php print '<textarea name="customerSRVMOT" rows="5" cols="61" onkeyup=conta(this.form);verificacaratteri(this);> '.$customerSRVMOT.'</textarea>';

?>
</tr>
</table>

<?php

print '

';
?>

</td>
</tr>
<tr>
<td width="110" height="344" valign="top">

<?php


print '<input type="submit" name="action" value="Registra " /></form>';

print '<form action="srvrq3.php" method="POST">';
print '<input type="submit" name="action" value="Server " /></form>';

print '<form action="srvrq7.php" method="POST">';
print '<input type="submit" name="action" value="Contatti " /></form>';


print '<form action="srvrq7.php" method="POST">';
print '<input type="submit" name="action" value="Precedente" /></form>';

print '<form action="srvrq4.php" name="close" method="POST">';
print '<input type="submit" name="close" value="Chiudi " /></form>';



?>

</td>


</tr>
</table>


</body>
</html>