Confirmation Message when clicking away while uploading

[Trivolve]

Just a suggestion, sometimes when i upload i accidentally press back button or some other website, then my uploading stops.
So my suggestion is, when uploading is on-going, there be a confirmation message "Are you sure you want to stop uploading?" when a user tries to go to another website, so he don't waste time

[Puniksem]

Try keeping your hands off your keyboard & mouse until uploaded!:D