When inserting a pic via a forum, like this, I only have the attachment option for the post.

I had to use the insert/edit image icon (above) in the tiny editor because that's the only option it gives me to put a picture in the post. The problem is that it reads the size of the picture (in the link I have to provide) and it sizes it that way.
I can change those perimeters but I don't have a way to change the html to 100%...which would be a pain in the ace anyways...