Another theme issue. Out of control

Love image assist, Especially the integration with the image galleries etc.

But take a look at the attached image. This is what I get when trying to add an image with image assist. (this site only). My theme is obviously part of the problem. As I don't have this issue with garland etc. Granted everything still works but its ugly.

The top frame is way to small. I could care less about the background image in the popup. The captcha (when logged in as admin). How can I get rid of all that crud.

Tried adding background none to the style.css (used proper css found on another img_assist issue thread).

How do I change the header frame to fit.

I can't be the only one, Ive seen other theme problems in the issue queue but just cant seem to figure it out.