Tyrian 2000 style background scrolling?

How would I go about doing this type of image scrolling in my HTML5 space shmup?
Any ideas would be appreciated.

If you don’t have more specific questions, I really doubt people gonna answer…

Actually the image doesn’t say a lot about how it scrolls… I’ve searched a video, it seems like a simple parallax scrolling (with three layers).
Check the “Parallax scrolling” example :wink:

How would I go about finding and importing the example?
The one from the wiki is corrupt.

There is an “Examples” folder in the GD installation directory. In the application, you can do “File >> Open an example” too.