Instructions

Resize the window and you should see this content area change size in multiples of 128px...

Why is this useful?

This would be useful if you had a tiled background as you can make sure that it will always stay aligned...

Dodgyness

Well this is really a proof of concept; really there should be some kind of tiled background to demonstrate this properly and I need to clean up the code...
But... as this has been sitting on my harddisk for a year I thought I'd upload it as I haven't used it yet...