I have looked at the source to your Web page and you seem to have a lot of table cells. Most of the cells are also spanning into other columns, which could be the reason your are having difficulty.
You only need two colums in the table so you should just have the following:
<table id="Table_01" width="800" height="667" border="0" cellpadding="0" cellspacing="0">
<tr>
<td>
[Your image buttons here]
</td>
<td>
[Your page content here]
</td>
</tr>
</table>
You can also use <div> but they are more complex to use since you do need a CSS file for them.