WEEDS SEASON 2

On Weeds season 2 I cannot get the player to go full screen, I see there is a button in the lower right hand corner as usual, but it does nothing when you push it. I was just wondering if it is the player, (tried on episodes 1,2 and 3), or if its something I need to install etc. I just do not like watching a whole season on a 5" display, kind of ruins the whole effect of watching tv on the internet for me. Hope I am not complaining too much, but it would be wonderful if someone could assist in this small problem.