Other way of scrolling image background


I’m working on a site who needs a scrolling background image, like this

I have come to a solution where I use an invisible button (covering the whole movie) where the action takes place in.
like this: http://www.webwasp.co.uk/tutorials/b31-panorama/index.php
Problem is, I can’t put buttons on it because the invisible button blockes them.
Does anyone know an other solution of making my background image scroll like the example site?

Great thanks in advance