2002 Chevy Cavalier Problem With Power Windows

I am having trouble with my power window on my drivers side. I noticed that the window starting going up and down much slower each week for about a year. Now it will go down about six inches and stop. I have to wait five minutes or so before before it will move in any driection again. It only moves about an inch or so each time I try. Needless to say it has taken me about a half an hour to get the window up. I haven't used it since. I was wondering if it was electrical, the motor, or maybe the regulator. I was hoping that you would be able to give me some assistance in diagnosing and maybe even direct me how to fix the problem. Thank you very much. I saw a similar questoin posted but my door is a little different. My car has the switches for the power window between the seats and not on the door.