When you embed xenforo you put a width and height right? When their a lot of threads and the page goes over the width, you have to scroll down. I don't want that.
Ah, I see. That's not "embedding" persay. All you would have to do is make it so certain elements are fixed, and put the container of the content on overflow: auto; or something similar
It's not going to be a simple implementation. I haven't got the time to work with it right now, but I'm sure someone else here would have the necessary code.