il problema non sussiste.... basta non dare sfondi alla tabella inserta
	codice:
	 <html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=windows-1252">
<title>Nuova pagina 1</title>
</head>
<body bgcolor="#00FFFF">
<table border="1" width="400" height="400" id="table1" background="Immagine.gif">
	<tr>
		<td width="200" height="200"></td>
		<td width="200" height="200">
		<table border="1" width="200" height="200" id="table2">
			<tr>
				<td></td>
				<td></td>
			</tr>
			<tr>
				<td></td>
				<td></td>
			</tr>
		</table>
		</td>
	</tr>
	<tr>
		<td width="200" height="200"></td>
		<td width="200" height="200"></td>
	</tr>
</table>
</body>
</html>