Question about window

Okay, somehow I popped the window out of its track, and now when I roll it up, it leaves a little gap on the side of the window. Someone said I need to remove the door panel. How do I do that? Or is there an easier way to fix it?

If the window moves forward and backwards you should be able to force it back onto the track. There is a little tab at the top of the window that holds the window on track.

BP