Get someone to push the car window up from the inside while using the electric window button simultaneously and another person forces the window up from the outside. Then visit a repair shop. This got me by many times while I was in college and couldn't afford repairs. Good luck!
There're various probable reasons that would explain why your car window is stuck. The window switch could be gummed up, or the motor may be blown. If you're unable to diagnose the exact problem, you should probably call up your mechanic and explain the situation.