89' window stuck down.

ok, well i have a small problem which i really hope isnt that big, my vehicles passenger side window on my 89' seems to be off the tract. its currently down, and when it goes up it gets to the top(where it comes out of the door)and seems like its out of wack. it stops dead there and i have no other movement. is there anything broken? please i dont want it to rain inside my car.

ok, i have checked it out, i pulled the door panel off very slowly and carefully. the window freely moves up and down when i push it by hand, the motor works and moves an arm up and down freely. i need to know how this little know hooks onto the actual window. i have a metal know attaced to the window motor, but it looks like this arm has become unhooked. anyone who can help. tks. mike