Background Tiling

How do you get the background to start tiling from the right rather than the left (the default)? I suppose it has something to do with CSS…

[] represents a whole tile. [ or ] represents a portion of a tile cut off because the window wasn’t wide enough.

Default:

[][][][][
[][][][][
[][][][][
[][][][][

What I want:

][][][][]
][][][][]
][][][][]
][][][][]