Window came off tracks

Hi guys. I am having problems with my step fathers jeep. I do not know how to put a window back on its tracks? The window is on but is not going up right it is angled funny. And when i tried to roll up the window it made a squeking/breaking noise. Can you guys please help me? Here is a picture on what it looks like.

I think part of the winder mechanism inside the door has come apart.
You will have to remove the interior door panel to access the mechanism. If you carefully observe the movement of the mechanism you can see how it works and (hopefully) see where the defect is.

It may be helpful to remove the interior panel from the working door on the opposite side and compare the two to better find the defect.

THANKS!!!!!! Its all fixed now and the fresh air feels great! I had to replace some of the interior because it got all wet and nasty.