Applications :: Safari And ITunes Not Loading After Liquid Spill

So don't ask me how but a beer spilt on my laptop keyboard (ibook g4). Afterwards, I quickly tilted it over and then removed the keyboard and dried it with a blow dryer. I later noticed that the computer shut down by itself bc I don't recall turning it off. Anyway, I got a little impatient/curious after an hour and restarted it. Not the smartest I know. It worked and I ran iTunes and played some music for my guests and then also was surfing the net a little. All was fine. Well we all went outside for a little and when I came back 20 minutes later, the computer had gone into sleep mode but wouldn't respond to keyboard presses so I shut it off for the rest of the night.

Fortunately this morning, the computer turned on fine. However, some of my Mac applications are not working, so far I know that Safari, iTunes and iChat aren't opening but iPhoto and Quicktime are. I think all my other non-Mac apps work fine...So then I tried redownloading iTunes but that didn't work either. I also tried opening a song from my Finder and it wouldnt open in iTunes. Basically the icon loads on the bottom of the screen for a split second and then stops. I have the original software so I guess I could reinstall it but I was wondering if someone knew an easier way? I feel pretty fortunate that my cpu works and at least I can use another browser/music player. Not to mention I can always get a new keyboard.