Rated 3 out of 5 stars
although it's a pretty good add-on, it's a little weird. That is, you'd better not press the "help" button in "Show HandyTab" page, or its function may totally become out of work. Once this happened, you could do nothing except type the address below in address bar to make it revivid.
Even though, the button still doesn't work.
Judging by this, I can only give it 3 star.