qui ti allego come viene in firefox, cioè uguale:

<div id="container" style="width: 100%">
<div id="nucleo" style="left: 12%; width: 76%; position: relative;">
<div id="core" style="position: relative; top: 25px; width: 100%;">

<div id="ctl00_ContentBody_core2" style="height: 776px">
<input type="hidden" name="ctl00$ContentBody$hidIDMola" id="ctl00_ContentBody_hidIDMola" value="3" />

<h1><span id="ctl00_ContentBody_lblTitolo1">Cambio Mola</span></h1>

<span id="DVPos" style="left: 0px; width: 40%; position: relative; top: 0px">
<div>
<table cellspacing="0" cellpadding="4" align="Center" border="0" id="ctl00_ContentBody_DVPosizione" style="font-family:Arial Narrow;height:100px;width:100%;border-collapse:collapse;">
<tr class="Header">
<td colspan="2">Dettaglio Posizione</td>
</tr><tr class="Row">
<td class="FieldHeader">Linea</td><td>TRT01</td>
</tr><tr class="AlternateRow">
<td class="FieldHeader">Macchina</td><td>1</td>
</tr><tr class="Row">
<td class="FieldHeader">Posizione</td><td>2</td>
</tr>
</table>
</div>
</span>

<span id="DVMola" style="width: 40%; position: relative" >
<div>
<table cellspacing="0" cellpadding="4" align="Center" border="0" id="ctl00_ContentBody_DVMolaCorrente" style="font-family:Arial Narrow;height:100px;width:100%;border-collapse:collapse;">
<tr class="Header">
<td colspan="2">Dettaglio Mola Installata</td>
</tr><tr class="Row">
<td class="FieldHeader">Descrizione</td><td>ADI S5</td>
</tr><tr class="AlternateRow">
<td class="FieldHeader">Data Montaggio</td><td>23/11/2007 11.59.39</td>
</tr><tr class="Row">
<td class="FieldHeader">M3 Abrasi</td><td>- - -</td>
</tr><tr class="AlternateRow">
<td class="FieldHeader">Val. Nominale</td><td>800</td>
</tr>
</table>
</div>
</span>



<div id="divGrid" style="left: 0px; width: 100%; position: relative; top: 15px; height: 345px; text-align: right;">

<h2>
<span id="ctl00_ContentBody_lblNuovaMola">Selezionare Nuova Mola:</span>
</h2>
<style type="text/css">
.ctl00_ContentBody_gri