Post Text Problem

On my new forum, I was editing the Rules post (which is rather lengthy) and I scroll down to edit some text. I highlight the text, but it takes me to the top of the post, and highlights all text inbetween there. Also, when I click on the very bottom line of my text, it seems buggy and transports where I was writing to the top line for a millisecond.

I'm using phpBB2 on my forums, which is located here: http://thehaxleague.forumotion.net/forum.htm

I'd like to have this problem solved, it's rather annoying.

Thanks for you help.

I cleared the cache on my forum and used compatibility view on my IE8, and now it's working. A moderator may close this topic and mark it as solved.