Dovrai installare un gestore di script utente per installare questo script.
Older Chrome version (e.g. v43) is not yet capable of differentiating between left and right SHIFT key. i.e. it only recognizes one type of SHIFT key.
Avoid using LEFTSHIFT+RIGHTSHIFT+SPACE for QuarterScrollKey for now, since all web browsers don't properly generate
keyup event when both SHIFT keys are held then released.