Window problems

[tizzlestick]

i have a 2door 99 grand am. A few days ago while rolling up my passenger window the crank seemed to get stuck. After a little elbow grease I heard a crack and something fall to the floor and the window would no longer roll up or down. The next day the same thing happened to the driver side window. After removing the inside panel I observed that all the clips that held the windows to the pulley system have broken. They are metallic clips, shaped in an L with plastic at the tip. I have been searching for these clips but cannot find a name or a place to get them. please help