Very nice, but I tried it and it didn't work for me.
I went to the green format, chose a forum, hit the hump button and nothing happened. I'm using opera 7.23, but the old jump to box works when I hit the [go] button.
Also, as a precaution, have you made sure that the new jump box doesn't interfere with the new pm notifaction? It looks to be in the same area as the pm notification.
Thanks for the hard work!