con questo codice il redirect funziona:

echo 'Messaggio inviato,
grazie per la vostra disponibilita';
echo "<html><head><META HTTP-EQUIV='REFRESH' CONTENT='2;URL=form-contatti.php'></head></html>";

Thank you

Mi rimane il problemone dello script più complesso che ha come prima parte il login:
Questo credo sia il codice completo per quanto riguarda la funzione login:

Codice PHP:
if ($do=="admin") {
    
    if ($action=="login"){
        if ($name==$adminname && $pwd==$adminpwd){
            include($log);
            
            $fp=fopen($log, "w");
            fputs($fp, "<?\n");
            $i=0;
            if (count($admins)>0){
                foreach ($admins as $line){
                    fputs($fp, "\$admins[$i]['time']=".$line[time]."; \$admins[$i]['hash']='".$line['hash']."';\n");            
                    $i++;
                }
            }
            fputs($fp, "\$admins[$i]['time']=".$now."; \$admins[$i]['hash']='".md5($hash)."';\n?>");            
            fclose($fp);
            
            jsRedirect($me.$getvars);
        }
    }
    
    if ($action=="delete" && isloggedin()){
        $todel=getkey($id, $stuff);
        unset($stuff->data[$todel]);
        $stuff->msort();
        saveposts($stuff->data);
        $do="view";
    }else{
        ?>
        <form action="<?=$me.$getvars?>" method="post" name="form2" class="smtxt">
        <table border="0" cellpadding="0" cellspacing="2" class="smtxt">
        <tr>
        <td><align="center"><div align="center">Login</td></tr>
        <tr>
        <td>
        <input name="name" type="text" id="name" size="20">
        </td>
        </tr>
        <tr>
        <td><div align="center">Password</td></tr>
        <tr>
        <td><input name="pwd" type="password" id="pwd" size="20"></td></tr>
        <tr>
        <td><div align="center">

        <input type="submit" name="Submit" value="Accedi">
        <input name="do" type="hidden" id="do" value="admin">
        <input name="action" type="hidden" id="action" value="login">
        </td>
        </tr>
        </table> 
        </form>
        <?
    }
}

if (isloggedin()){
    showmenu();