Os coloco el código ya que no he ocnseguido que las capas de abajo se vean en firefox en el mismo sitio que en IE.
haber si podeis ayudarme.
Gracias
<head>
<style type="text/css">
<!--
body {
background-color: #FFF5D7;
margin-top: 0px;
}
.Estilo5 {
font-family: Verdana, Arial, Helvetica, sans-serif;
font-size: 10px;
}
.Estilo8 {
color: #770003;
font-size: 12px;
}
-->
</style>
</head>
<body>
<table width="980" border="0" cellpadding="0" cellspacing="1" bgcolor="#000000" align="center">
<tr>
<th height="670" scope="row"><table width="980" height="661" border="0" align="center" cellpadding="0" cellspacing="0" bgcolor="#FFFFFF">
<tr>
<th height="110" valign="top" scope="row"><table width="980" border="0" cellspacing="0" cellpadding="0">
<tr>
<th valign="top" scope="row"> </th>
</tr>
<tr>
<th valign="top" scope="row"><a href="index.asp"></a><a href="http://www.glasspaint.es" target="_blank"></a><a href="solicitud_presupuesto.asp"></a><a href="contactar.asp"></a></th>
</tr>
</table> </th>
</tr>
<tr>
<th height="551" valign="top" bgcolor="#FFFFFF" scope="row"><table width="980" height="551" border="0" cellpadding="0" cellspacing="0">
<tr>
<td height="551" valign="top" background="images/fondo_index.jpg" scope="row"><p> </p>
<table width="980" height="458" border="0" cellpadding="0" cellspacing="0">
<tr>
<th width="307" valign="top" scope="row"><table width="307" height="449" border="0" cellpadding="0" cellspacing="0">
<tr>
<td height="221" scope="row" onmouseover="mostrar('capa1')" onmouseout="ocultar('capa1')"> </td>
</tr>
<tr>
<th height="226" scope="row" onmouseover="mostrar('capa4')" onmouseout="ocultar('capa4')"> </th>
</tr>
</table></th>
<th width="330" scope="row"><table width="307" height="453" border="0" cellpadding="0" cellspacing="0">
<tr>
<th height="126" scope="row"> </th>
</tr>
<tr>
<th height="237" scope="row">
<div style="position:relative">
<div id="capa5" style="position:absolute;width:100; height:74px;top:70px;left:-110px;visibility:visible;z-index:1"><img src="images/frase_explicar.gif" width="232" height="71" /></div>
<div id="capa1" style="position:absolute;width:100;height:100;top: 20px;left:-130px;visibility:hidden;z-index:1"><img src="images/frase_confort.gif" width="294" height="170" /></div>
<div id="capa2" style="position:absolute;width:100;height:100;top: 0px;left:-140px;visibility:hidden;z-index:1"><img src="images/frase_seguridad.gif" width="294" height="264" /></div>
<div id="capa3" style="position:absolute;width:100;height:100;top: 20px;left:-130px;visibility:hidden;z-index:1"><img src="images/frase_descanso.gif" width="294" height="170" /></div>
<div id="capa4" style="position:absolute;width:100;height:100;top: 40px;left:-130px;visibility:hidden;z-index:1"><img src="images/frase_discreccion.gif" width="294" height="125" /></div>
</div>
</th>
</tr>
<tr>
<th height="90" scope="row"> </th>
</tr>
</table></th>
<th width="343" scope="row"><table width="338" height="447" border="0" cellpadding="0" cellspacing="0">
<tr>
<th height="255" scope="row" onmouseover="mostrar('capa3')" onmouseout="ocultar('capa3')"><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="180" height="217">
<param name="movie" value="images/descanso.swf" />
<param name="quality" value="high" />
<param name="wmode" value="transparent" />
<embed src="images/descanso.swf" quality="high" wmode="transparent" pluginspage="http://www.macromedia.com/go/getflashplayer" type="application/x-shockwave-flash" width="180" height="217"></embed>
</object></th>
</tr>
<tr>
<th height="192" scope="row" onmouseover="mostrar('capa2')" onmouseout="ocultar('capa2')"> </th>
</tr>
</table></th>
</tr>
</table>
<table width="980" height="79" border="0" cellpadding="0" cellspacing="0" bgcolor="#FFFFFF">
<tr>
<td scope="row"><img src="images/linea_cierre.jpg" width="980" height="1" /></td>
</tr>
<tr>
<td height="78" background="images/fondo_cierreweb.jpg" scope="row"><center>
<p class="Estilo5"> </p>
</center></td>
</tr>
</table></td>
</tr>
</table>
</th>
</tr>
</table></th>
</tr>
</table>
</body>