share bar plugin

Does anyone know what plugin they are using for this share bar?

https://www.slate.com/articles/sports/sports_nut/features/2011/nfl_2011/week_14/tim_tebow_comeback_reality_is_now_indistinguishable_from_tim_tebow_fan_fiction_.html

The ones I have found either don’t have google+ or they don’t have the feature where it goes to the top when the browser is smaller.