well, the good news; you now have CSS optimization active and I do see the background. maybe a caching issue for you?
regarding the scroll gallery; you'll have to exclude jquery (jquery.js, jquery-min.js or jquery.min.js) and probably jquery.bmoGallery.js as well. if that isn't enough, you could try exclude jquery and bmoGallery. an easy alternative could be "force in head" and "look only in head".
hope this helps,
frank