Download
jBookmarker comes in the archived examples but if you want to make sure you're using the latest version (I haven't changed anything in it in like an year or so, but that's not the issue here), use the pastebin.
The latest tested version will be available there.
Action script
If you want more info on the Flash programming part, go to aurelian.droopy.ro and talk to my colleague Aurelian, he's the Action Script guru around here!