Código PHP:
<?
$aut=$_SESSION['autentificado'];
if($aut){
echo "<form action="Php/entrada.php" method="post" name="acceso" id="acceso">";
echo "<table width="95" border="0" cellpadding="0" cellspacing="0">";
echo "<tr>";
echo "<td valign="top"> </td>";
echo"</tr>";
echo"<tr>";
echo"<td valign="top"><table width="95" border="0" cellspacing="0" cellpadding="0">";
echo"<tr>";
echo"<td width="15" align="center" bgcolor="#FF6600"><span class="simbolo">¬</span></td>";
echo"<td width="5" valign="bottom" bgcolor="#FFB98A"><table width="100%" border="0" cellspacing="0" cellpadding="0">";
echo"<tr>";
echo"<td valign="bottom" bgcolor="#A0B4AF"><img src="../img/pixel.gif" width="1" height="1" /></td>";
echo"</tr>";
echo"</table></td>";
echo"<td align="left" valign="bottom" class="datosnegrita"><table width="100%" border="0" cellspacing="0" cellpadding="0">";
echo"<tr>";
echo"<td bgcolor="#FFB98A" class="accesos">clientes</td>";
echo"</tr>";
[.....]
echo"</table>";
echo"</form>";
}?>