In netscape navigator 4x, say i have something like this

Code:
<table>
<tr>
<td>

<div id="obj1">text</div>

</td>
</tr>
</table>
how can i access the div "obj1"? i have tried document.obj1.document.whatever, but that doesn't work... i have also tried < layer > and < span > but i can't contact them, or get any of them to work right when they are inside of a table. can anyone help? also, how can i center a < div > directly in the middle of the page, using css properties?

thanks