Thanks to everyone for trying to help me. I did try to implement the code, but it didn't seem to have any effect, whatsoever. It's very likely that I'm the one doing something wrong, but I can't, for the life of me, figure out what. I tried inserting it just above the </body> tag of the HTML page and I gave it the ID of "content".
I'm really not supposed to show this to anyone, but here is a visual reference for what I'm doing. This is just a rough draft, so the images I've made are only temporary. In any case, I have yet to figure out how to change the type of scrolling from the way it is now to something that will auto-scroll left or right depending on which edge the mouse is nearest.
As for the CSS forum, sorry I didn't see it before. I don't know how I missed it, but it seems obvious now.
Thanks again for all of the help.