Unneeded scrollbar

I’ve had this problem before (was never solved), but I’d like so the content in my iframe for my blog would move over, and not get in the way of the vertical scrollbar(which creates a horizontal scrollbar, which is the problem). To see what I mean, you can go here: click. I’ve tried a few things, it probably needs more explanation, and there may already be a topic on it, so if you could so kindly help me get directed toward a solution, I’d be quite grateful =)