voici la structure
<br>
<table border="5" width="100%" cellpadding="10" cellspacing="10">
<tr>
<td>
<iframe src="mailsend.php" name="refresh" width="100%" frameborder="0"></iframe>
</td>
</tr>
<tr>
<td>
<iframe src="bar.html" name="progress" width="100%" frameborder="0"></iframe>
</td>
</tr>
</table>