If this is on the plastic area near the track pad,
Crack an egg in a cup of water and mix it with a cup or two of water. Put a very small amount on a cloth and rub the affected area. The egg allows the oil and water to mix so you can wipe it off.
Make sure you clean off the area by drying it well and wiping it off with a moist, non eggy towel.
But remember, dont use a very large amount at all incase of spillage.
If its actually on the pad or right next to the keyboard, dont do it.
Dodgers World Champs 2012