left window broke on my renault clio mk1 1995 n reg?

on my left window when i press the button to make the window go down it pops away from the left side and a plastic clip thing appears and it looks broken it is obviously used to keep the window on some osrt of runner i just dnt knwo where to get a new plastic clip from as it is like really hard to actually describe wat the piece looks like.

jack
April 2009