Clearing form fields..not working

Im putting togther a site where the client wants several contact forms.
no prob…they are all working fine but i noticed that when you go from one form to another the text fields arent clearing.

I tried adding some script to clear it like.

on (release){
fname = “”;
lname = “”;
company = “”;

and named the boxes with the variables to match…but no luck…
any ideas please?..

http://64.207.191.16/familypost/corp_site/fampost_main.htm/

in the customer service area…