This article explains how to save your laptop after a fall. Instructions apply to all brands of laptops.
How to Save Your Laptop After a Spill
First of all, turn it off. Time is of the essence here, so if you have to, go ahead and do a hard shutdown. If possible, remove the battery, because if any liquid gets into the battery, it will short out.
Next, remove all cables, external drives, removable bays, and external network cards. You don't want your laptop plugged into anything.
Then quickly but gently blot up any excess liquid with a soft cloth — preferably a lint-free absorbent fabric. Be careful not to use a wiping motion, as this will only push the liquid around.