hmm.....not quite the effect i'm going for

tried finding a pic, but i'm at work -_-

the glass i'm trying to make, is like....ever seen office doors? the old PI movies have em alot :)
and the glass is foggy, but has areas "bumped" out it seems, giving the effect of a lense
if the fog is taken away, you would see a very slight "zoomed out" effect of whats behind it

so i know refraction will be used, and a bit of reflection (glass duh)
cell node for the pattern, in either bump or dispacement

but it doesnt look like it should -_-