Your issue is in no relation to an image. What you need to do is modify your <TD> settings in your CSS.
If you locate:
Code:
<td height="15" bgcolor="#0d150f">
<!-- nav buttons bar -->
<div class="tborder" style="padding:1px; border-top-width:0px">
The above code is the source of your issues (in red). I would recommend adding a new class in your CSS, possibly called .td1 or something on those lines and put in padding. However you will continue to run into a conflict with the original TD.
So in an essence you need to find a happy-medium between the TD and the table-data posted above. What is happening is the CSS table-data is superseding anything you place manually into the code.
Please let me know if I was able to be of any assistance!