CSS for table background and image in IE and Firefox

I am w开发者_如何学Corking on this site, http://store.springtoss.com/ The footer of the page looks fine in FF but when it's being viewed in IE, the category images does not overlap with the background image.

I have tried position relative and z-index as well but it doesn't work.

Any advice? Thank you

@Sylph: Viewing your source-code...

You're coding in a Strict DOCTYPE, so make sure all your elements are closed (<img />, <br />, etc.). Furthermore,

Ln 65: <table width="100"% >

should be

Ln 65: <table width="100%">

Then you also have a lot of lines like

<td width="150px">

They must be either

<td width="150">

or

<td style="width: 150px">

otherwise it's invalid code.

On Ln 202 you have an unclosed <tr>. Please fix those errors first, run your code through a validator and then update your question for further CSS or other help.