GB, Like Tinker1 I have cleaned several keyboards in the dishwasher and brought them back to life. The really harmful part of that spill was the sugar in the coffee. Just place in dishwasher, keys facing down, run on normal cycle-- no detergent. Air dry in the sun if possible or place in front of a fan for 24 hrs. Will probably take care of problem----nothing to lose at this point.
-- MIKE--