Triggers problem

i have a problem in triggers for that bellow is my table structure

survey table
<pgsql-php(at)postgresql(dot)org>survey_id

questions table
question_id
survey_id

answer_options table
answer_option_id
question_id

now the problem is
i want to write a trigger after insert on survey table data should be
inserted in questions and answer options table
i get survey_id by new.survey_id but in same function i am not getting
question_id to insert in answer option for newly inserted questions as the
trigger is on insert of survey table
i don't want to use cascaded triggers because it is creating some more
problems
please guide me in this regards