[Closed] Script Request: Reset Smoothgroups

Hi people

I´m finding myself lots of times scrolling way down to the polygon properties rollout to put it all into the same smoothgroup. I´d like to create new faces wich conserve the smoothgroup of my element (so everytime i extrude and edge it acquires the sg of its parent ) or instead, a button i can push to put every single polygon to the same smoothgroup, no dialog boxes and stuff, just press and go

Thanks!