pg_depend question

[Tony Caduto <tony_caduto@xxxxxxxxxxxxxxxxxxxx>]

Hi,
I am working on a dependency/referenced by viewer and given a query like so:
select refobjid from pg_depend where objid = 91640

how do I determine what refobjid is?  is there a function or something I 
have missed or do I just run brute force queries against the system tables?

Thanks in advance :-)

--
Tony