Código HTML:
<table width="50%" border="0" cellspacing="0" cellpadding="0" style="height:100%">
<tr>
<td><iframe name='iSeguPR' id='iSeguPR' src='top.html' width="100%" height="100" frameborder="no" scrolling="auto" marginheight="0" marginwidth="0"></iframe></td>
</tr>
<tr>
<td><iframe name='iSeguPRaux' id='iSeguPRaux' src='bottom.html' width="100%" height="100%" frameborder="no" scrolling="auto" marginheight="0" marginwidth="0"></iframe></td>
</tr>
</table> a ver que pasa.....
