I'd like to track people who watch videos on a client site who watch through 50% of it. I know that I need to make a server call (I assume with asyncronous javascript) at that 50% point, but I'd like to confirm what I already suspect. That the way you would do this would be different depending on the player. So would the method be different depending on whether the player is flash, quicktime or html5? Would you use javascript for all of these? Thanks in advance.