Variable width image layouts with Divs only

Hi all,

I'm trying to create an image based layout just like the one here: http://www.moneywise-ng.com/admin/. I created this particular one but I used tables.

I can get it done using divs only but only for a fixed width layout; I cant get it to seamlessly adjust to the size of the browser window like I did with the table-based version i.e. using percentages.

In the table-based version I did something like this for the top part:

<table>
     <tr>
          <td><img></td>
          <td width="100%" background="img"></td>
          <td><img></td>
     </tr>
</table>

How do I do this same thing with divs only?

I've made a pledge to do it with divs until all else fails; then I'll backslide to tables. Help a brother out why dont you.

Thanks in advance.