did my search, found nothing on it.

a few weeks ago, my left driver side window regulator broke. that same day, i said to myself.. if my sunroof stops working, i'm screwed.. it stopped working that very hour.

it can tilt up and down, but when i press the button down, it tries to slide down, but it gets stuck right before it opens at all. there have been lucky days where it has opened for me, but its only been like 2 days out of the month its been broken. i haven't taken it to the dealer or anything, and i have no idea what could be wrong. any ideas? if this happened to you, how much did it cost you at the mechanic/stealership?