It is set at 50% now. So it doesn't rip graphics apart unless you have larger resolutions like (1600x1200). But I think that nobody other than me will see it this large.
I'll probably write something that will change that percentage based upon the users resolutions, or better yet, browser size. But unless I have the script execute on resize, some people may resize the window after it is created.
If this does happen, then the user will just have to suffer with ugly headers, until they size it back or click on the next link. With it being a forum, I imagine most people own't be staring at the header too long. They will eiather scroll downt o read the thread, or click on something to move on to the next topic.