Are they "stuck" because something is preventing them from retracting? Are they "stuck" because they have no power running to the motors? I am assuming since you say "they" you mean both windows and not just one. Did they both work at one time and go out together? Or did one go out and the other shortly thereafter? If they went out suddenly and simultaneously, it could mean your main power wire to the switch is fried, or the switch itself is fried. If they went out at different times, it could mean that the motors are old and they are fried.
I don't know dude.... you aren't giving us much to go on.
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