mi da ancora problemi, quando clicco sul tasto submit mi carica la pagina php ma non fa niente provo a sciverti il codice del form nella pag html

<HTML>
<HEAD>
<TITLE>ORDINI</TITLE>
<META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1">
</HEAD>
<BODY BGCOLOR=#dedede LEFTMARGIN=0 TOPMARGIN=0 MARGINWIDTH=0 MARGINHEIGHT=0>
<table width="350" border="0" cellspacing="0" cellpadding="0" align="center">
<tr>
<td>
<form method="post" name="ordine" id="modulo" action="invio.php">
<table width="318" border="0" cellspacing="5" cellpadding="0">
<tr>
<td>
<input type="text" name="cod" size="28" maxlength="20">
</td>
<td><font face="Arial, Helvetica, sans-serif" size="2">Cod. Rivenditore</font></td>
</tr>
<tr>
<td>
<input type="text" name="nome" size="28" maxlength="60">
</td>
<td> <font size="2" face="Arial, Helvetica, sans-serif"> Nome negozio</font></td>
</tr>
<tr>
<td>
<input type="text" name="citta" size="28" maxlength="60">
</td>
<td><font size="2" face="Arial, Helvetica, sans-serif">Citt&agrave;</font></td>
</tr>
<tr>
<td>
<input type="text" name="tel" size="28" maxlength="60">
</td>
<td><font size="2" face="Arial, Helvetica, sans-serif">Telefono</font><font size="2" face="Arial, Helvetica, sans-serif">
</font></td>
</tr>
<tr>
<td colspan="2" height="0"><font size="2" face="Arial, Helvetica, sans-serif">Note</font></td>
</tr>
<tr>
<td colspan="2"><font size="2" face="Arial, Helvetica, sans-serif">
<textarea name="note" cols="35" rows="4"></textarea>
</font></td>
</tr>
<tr>
<td colspan="2">
<div align="left">
<input type="submit" name="Submit2" value="Invia e-mail">
</div>
</td>
</tr>
</table>
</form>
</td>
</tr>
</table>
</BODY>
</HTML>