Y este es mi codigo PHP:
Código PHP:
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1" />
<title>Index</title>
<link href="../css/original_intersys.css" rel="stylesheet" type="text/css" />
</head>
<body>
<div align="center">
<table width="693" border="0" cellpadding="0" cellspacing="0">
<!--DWLayoutTable-->
<tr>
<td width="693" height="158" valign="top"><object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,19,0" width="744" height="188" title="header">
<param name="movie" value="../flash/header_inicio.swf" />
<param name="quality" value="high" />
<embed src="../flash/header_inicio.swf" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="744" height="188"></embed>
</object></td>
</tr>
</table>
</div>
<div align="center">
<table width="746" border="0" cellpadding="0" cellspacing="0">
<!--DWLayoutTable-->
<tr>
<td height="19" colspan="6" valign="top" class="body_up"><!--DWLayoutEmptyCell--> </td>
</tr>
<tr>
<td width="18" rowspan="3" valign="top" class="body_isq"><!--DWLayoutEmptyCell--> </td>
<td height="19" colspan="3" valign="top" class="cont_up"><!--DWLayoutEmptyCell--> </td>
<td width="246" rowspan="3" valign="top"><table width="100%" border="0" cellpadding="0" cellspacing="0">
<!--DWLayoutTable-->
<tr>
<td height="19" colspan="3" valign="top" class="news_up"><!--DWLayoutEmptyCell--> </td>
</tr>
<tr>
<td width="23" height="47" valign="top" class="news_iz"><!--DWLayoutEmptyCell--> </td>
<td width="199" valign="top"><!--DWLayoutEmptyCell--> </td>
<td width="24" valign="top" class="news_der"><!--DWLayoutEmptyCell--> </td>
</tr>
<tr>
<td height="28" colspan="3" valign="top" class="news_down"><!--DWLayoutEmptyCell--> </td>
</tr>
<tr>
<td height="19" colspan="3" valign="top" class="news_up"><!--DWLayoutEmptyCell--> </td>
</tr>
<tr>
<td height="63" valign="top" class="news_iz"><!--DWLayoutEmptyCell--> </td>
<td valign="top"><!--DWLayoutEmptyCell--> </td>
<td valign="top" class="news_der"><!--DWLayoutEmptyCell--> </td>
</tr>
<tr>
<td height="38" colspan="3" valign="top" class="news_down"><!--DWLayoutEmptyCell--> </td>
</tr>
</table></td>
<td width="20" rowspan="3" valign="top" class="body_der"><!--DWLayoutEmptyCell--> </td>
</tr>
<tr>
<td width="21" height="169" valign="top" class="cont_izquierda"><!--DWLayoutEmptyCell--> </td>
<td width="417" valign="top"><!--DWLayoutEmptyCell--> </td>
<td width="24" valign="top" class="cont_derecha"><!--DWLayoutEmptyCell--> </td>
</tr>
<tr>
<td height="26" colspan="3" valign="top" class="cont_down"><!--DWLayoutEmptyCell--> </td>
</tr>
<tr>
<td height="19" colspan="6" valign="top" class="body_down"><div align="center"></div></td>
</tr>
</table>
</div>
<div align="center">
<table width="747" border="0" cellpadding="0" cellspacing="0">
<!--DWLayoutTable-->
<tr>
<td width="747" height="41" valign="top"><object classid="clsid:D27CDB6E-AE6D-11cf-96B8-444553540000" codebase="http://download.macromedia.com/pub/shockwave/cabs/flash/swflash.cab#version=7,0,19,0" width="780" height="52" title="footer">
<param name="movie" value="../flash/footer_inicio.swf" />
<param name="quality" value="high" />
<embed src="../flash/footer_inicio.swf" quality="high" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="780" height="52"></embed>
</object></td>
</tr>
<tr>
<td height="39" valign="top" class="ENCABEZADOS">Copyright (c) 2005 </td>
</tr>
</table>
</div>
</body>
</html>
Cosas como estas (<!--DWLayoutEmptyCell--> ) las genera Dreamweaver pero ya las quite y aun asi no jala en firefox ni IE7, pero si en IE6.
Ayudenme para saber en donde radica mi problema