I hope this question is so easy that I feel ridiculous after it's answered.

I have a swf file that I am using as background. It's coded to resize and add random images. I've gotten it to work wonderfully in safari and FF for mac. However, I am at a complete loss as how to get this to work in IE7(or below) or even in FF for windows. I've used an IE CSS hack and attempted to manipulate IE that way using a variety of methods.

The link to the page is:
The link to the main css is here:
And the ie hack css is here:

I would appreciate any assistance.