Non sono sicuro di avere capito. Comunque....

codice:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN">

<html>
<head>
<title>Untitled</title>
</head>
<body>
<div id="d" style="display:none">
cfnosfoidflksd,pogsd

sf,opsfpsqfofsd)fàsdf

</div>
<table summary="">
<th>Mio testo</th>
<tr>
<td id="td1"></td>
</tr>
</table>
<script language="JavaScript" type="text/javascript">
<!--
document.getElementById('td1').innerHTML = document.getElementById('d').innerHTML;
//-->
</script>

</body>
</html>