Repeating header

I’m trying to make a header that has two parts. One part is a repeating image and the second is the an image of the name of the blog.

I want these images to be background images and I want them to scale with the page so they repeat off the side but the title always stays in the center.

It would look something like this:

—————————————————
| repeating image | title image | repeating image |
—————————————————-

I’ve modified an existing theme and sort of have this setup working except both the left and right edges are limited by something and are being cropped off. How do I make these extend off the sides of the page without producing scroll bars for the site?

Thank you very much!