PHP Question

I'm trying to get a second background image to be flush with the top center of my page, and to center with the center of the image so it will stay in the same position with the tables as you resize it, cutting off both sides of the top image equally when it is in a smaller browser.

I am trying to do it with a div and z-index:-1, however I'm having no luck.

I can get it to be in the back, and no matter what I do it will stay flush with the top left.

A perfect example, who I have not been able to find the code from, has been:

http://wow.allakhazam.com

Does anyone know how I could pull this off?

Thanks.

Shitty troll is shitty. That's a CSS problem, but multiple backgrounds is now possible with CSS3 because if you're not joking I assume you'd be just fail enough to use it.

http://www.zenelements.com/blog/css3-background-images/