Problem with threadbit_background variable

[Mr. P]

I am trying to edit this variable and I can edit it fine except for one problem. It isnt consistent between IE and other browsers. I have two options as follows:

I can make the Background Color:
url(http://www.siteaddy.net/images/bk2.png)
- With this the background image shows properly across the threadbit in IE, but doesnt show up at all and leaves the area transparent in every other browser.

I can also make the Background Image:
url(http://www.siteaddy.net/images/bk2.png)
- With this the background image shows up in every browser except for IE.

I can try to have the same value in both and in that case I am back to having the background image only working in IE.

Has anyone seen a problems like this? I would really like to have my site be fairly consistent across all browsers.

:edit: removed my site address and replaced with random example address so as not to seem as though I am spamming my site...