control bookmarks based on roles/USERNAME()?

Hi,

Is there any why to control the bookmarks based on roles/USERNAME()?

for exmple

i have 3 bookmarks (bookmark1,bookmark2 and bookmark3) and two roles (role1 and role2)

for role1/user1, I need bookmark 1 and bookmark2 visubled and hide bookmark3.

for role2/user2, I need bookmark2 and bookmark3 visubled and hide bookmark1.

Please advise..

Thanks,

Vijay