Software :: Any Tool For Automatically Filling In Javascript Forms?

I'm at a web page for an organization and I want to get a bunch of information -- say the addresses of 20 members of the organization. The web page presents a javascript form looks something like:

First name: (textbox)
Last name: (textbox)
State: (textbox)
Member status: (radiobutton)
Find: (button)

It then provides the mailing address and telephone number of the member. I don't want to enter the data by hand 20 times, but would prefer to fill out the form automatically from data in a text file or database or script or whatever. Is there a tool in linux for doing this? I looked up curl, but it seems that I can do it in curl only if they are html forms, but not js forms (or more correctly, I haven't figured out how to do it). Moreover, the page returned by curl is not the page that comes up in firefox; I don't know why.