Strange Macbook happening after liquid spill

This is very wierd one, indeed. Two weeks ago, a small amount of liquid was spilled on my Macbook, keyboard left side. It still worked fine but airport went missing. Turned it off and tried to dry it and next day it froze and went blank not to start up again. Yesterday I was going to take my Macbook to a local shop be checked out as I had not done anything with it for two weeks and it still would not work. I decided to put some juice in the battery. After it was complete I pressed the On button and the thing fired up as if nothing had happened I started to check it out but then the screen brightness dropped 50% and froze. I waited a few minutes and rebooted and it came back on fully and stayed on all day, allowing me to back up all files to a CD and check out any problems. I found that the Airport card still did not work so I was unable to access the internet, but everything else seemed fine. I turned it off last night and this morning took a chance and turned it back on . I could hear it boot up but the screen stayed dark and it was back to square one.

Would this signify something other than a motherboard problem, or is it one and will need replacing at high cost !. Or was it The Ghost of All Macs Past trying to help me out with my files. Any ideas ?

Alfisto@aol.com