How do I discover the mouse position relative to the viewable browser window? If you see screenshot below, I want to determine the co-ordinates of the mouse relative to the viewable area in the browser window whilst hovering over those four thumbnails. As you can see I consider the top left corner of the viewable area as 0, 0. I want the exact mouse position and not the position of the thumbnails and I want to achieve cross-browser compatibility.

Any help?
Found a solution:
Thanks!