i saw a set of "retrofit" kits (came out of a working 4 power window mondeo wagon they parted out) on ebay.co.uk once for like 100 pounds or so.
and, my passenger window does the same thing, no other one, just the one.
and i see you have a teal contour..... probly the same color as mine, and NO V6 i see. i'm on a hunt for a teal V6 contour. i spotted a teal V6 mystique once....