Sending data to a CGI script without a form?

[Joel Hammer]

Is there a way to send data from a browser to a CGI script without using a form?
And, if not, is there a way to create a phantom form, that is, a form which
javascript generates itself, which would never appear on the browser screen?

I can sorta envision how this could be made to happen with HIDDEN types
in input fields, but I hope to find a simple, "clean" approach.

Thanks,
Joel