Show/Hide details circle position fix.
Implemented by moving bubbleFill to  -(expanded_radius - radius) / 4 left and top position on showDetails, onHideDetails set it back to "auto".
Tried to implement by setting bubble div left and top position (one controlled by force) but no luck.

The "auto" on hidedetails seems to fix bubbles being visually moved after first mouseover. Need to show designer critic for review