Response:
I'm ASSUMING that you are referring to the nylon track itself being broken. There are 2 10mm nuts on the bottom of the glass that hold the window to the track. Unbolt and slide the window up and use a piece of rope on the inside of the window to control it up and down until you get the track. You can tie off 1 end to the door closer strap to keep the window up and still use the door.