Interface gone?

Im not sure what I did, but my entire interface is gone except for the screen, i see my character and them background and all, but i dont see my skill bar, health, compass, chat box or anything. but if i hit 1 it still goes to 1 in my skillbar. i tried going to options but i hit it and nothing happens. did i accidently hit a combination of keys to lose it because its annoying..

CTRL+SHIFT+H Should re-enable it. That's the key combo for HUD control visibality