Turning the NumLock On & Off on a Laptop (Easiest - non-manual way)
У вашего броузера проблема в совместимости с HTML5
Hey guys just a quick video here telling you how to do this with the Fn key and one of the functions you have above the number keys.
Something I didn't mention was that some laptops will do this without holding down the Fn button and only pressing one of the function keys, it depends what the default setting is and that is different for every machine.
If this didn't work look at my other video so that you can change it manually, only do that if this doesn't work for whatever reason.
Manual way:- http://www.youtube.com/watch?v=p8J7TJBSBPo&feature=related