CRAZY MANIAC!!

tonight i had some 6 max action with 1 crazy maniac and the rest of the table seen pretty decent and rocky. the maniac been jacking up pot and over betting and plays almost anything with AKQJ. I know what to do with this perticular player. But when there is a decent player action behind me still yet to action. i am a little reluctant to call the maniac's big bet even I know I am good most of the time. because rocks don't join the fun if they don't have a good hand.

and in another case, the rocky players leads of with a 1/2 to 2/3 pot bet, I have a callable hand but fearing the maniac will raise the pot and that made me fold top pair good kicker alot.

what do u do when you in sitiuation like this? change table? play loose or tighten up?