Finger in the glass Riddle – let's see if a new crop of people can get it right!?

If you like really good riddles and challenges you can get more of these at http://www.mindchallenger.com Try to solve this before going there for the answer. There are new ones posted at the beginning of each month.

You have a glass of water sitting on a perfectly balanced scale. You put your finger into the glass and into the water. Your finger does not touch the glass. It only is submerged in the water. It makes the water go higher up the sides of the glass but it does not overflow. What happens to the glass side of the scale? Does it go down, stay the same or go up?