Client Side JS and Outlook

[Sollust]

Hello all,

I got a JS from
http://javascript.internet.com/forms/mulitple-mailer.html
and it does a curious thing: when I click the submit
button, the To: and Subject: lines are filled in just fine.
But then the items that go into the email body
reflect the other fields of the form, and they are
like this:
email=
name=
etc=
and so on. Each name of each field in the form is on
its own line, with the value that was in the form.
I don't understand how this is done. More than that,
I don't get where the equal sign comes from. I also
don't understand how these values get put into the
body of the email...

I've also attached the js...just change the .txt to .html

Thanks for helping me understand!

Sollust