Aroonav Mishra

I would like to add that the keycode 173 is being used by Opera, IE, Chrome & Safari for the Mute On/Off button. (Source: http://www.javascripter.net/faq/keycodes.htm) Will this be an issue?...

I have added a check which will only add the keycode for '-' if it is on the Firefox browser. I have removed the FF's keycode for '=' as it...