abrowser &
# on a fast computer, .5 is too fast, 1 is ok. on x200, 1 is too fast, 2 is ok.
sleep 2
- i3-msg "[workspace=__focused__ class=\"$b\"] mark abrowser"
+ i3-msg "[workspace=__focused__ class=\"$b\" instance=\"Navigator\" window_role=\"browser\"] mark abrowser"
wait
fi