Permissions Query?

Hi all,

still working on dabo a bit. Thanks for all the
earlier suggestions, they are working well.

I now want to know if the user/role has permision
to the schema.table.

How do I query to pgsql to know what permissions a
particular user has on the table?

I was thinking something along the lines of a
query that maybe produces results like this.

schematable    p_select p_delete p_all p_update ..
public.tbl1       1        0       0      0
public.tbl2       1        1       1      1
public.tbl        0        0       0      1

I am intersted to see if I can filter what
tables/schemas are avaliable to the user to avoid
error messages due to permissions.
thanks,
Phil