Have a look into the system tables 
pg_proc
pg_trigger

Have a look into the documentation, 
refer to System Catalogs

Within psql you get 
System Catalogs listed by \dS
specific information about a table 
by i. e. \d pg_proc

Regards, Christoph 

Mon, 17 Sep 2001 16:06:37 METDST
Haller Christoph <ch@rodos.fzk.de>
Re: triggers procedures listing URGENT