Need a corner window bracket !!!

I need a bracket for the corners of my windows! My old one's have eroded away so much that it does not grip the window on the inside or outside. So you could say I need one pretty bad. I have power windows and the window never seals good towards the opposite edge.. the edge that runs up and down. It doesn't seal on either side right there, and I'm hoping replacing those corner brackets (which mount from inside the door) will fix this problem. Any input as to whether or not this will work will help, as well as anybody who has a link to go buy some. Thanks.