This morning, went to my car at 7.45 in order to go to rugby. I got in and did down both the windows, i have one electric window which is the passenger side and i pressed it down as usual, it got down to the bottom,went up about a quarter and then stopped going up. I had to pull the window up and then keep pressing the button etc. Havent tried it since i got it back up...what should i do!?