custom header image gone

Hey guys…
Yeah, I know, two problems in one night…http://mradamduckworth.com/
Anyway, I was trying to change the “facebook” link on the right hand side into the facebook image. When I did that, it was out of alignment and the custom header image vanished. When I changed it back to the way it was before, the custom image was still gone.
I even when as far as deleting the theme and reinstalling it…
nothing.
Any ideas on how I screwed it all up?
Thanks