Silent mode to submit a form

Hi,
I'd like to send data to a server in a silent mode, it's possible?

I mean:

- I'm doing a FDF form submission to a server side PHP script ... and it works.
- It is normal (for my environment) that the server can be down, the script not
to exist or every other network/server related error occurs
- my goal is to hide everything about this submission to the end user, both it
would be successful or failing... nowaday, the reader shows up the server
response or an "page unavailable" message

I'm submitting the form via Javascript (the Submit Button into the Object Library works too of course, but I can't guess any option to achieve my goal), as I hope to try a lower level solution.

The "optimum" would be to have a single "PRINT & submit" button making the FDF sumission behind the curtains and printing the user-filled PDF, no care about the first step result.

Any suggestion?

Thanks in advance,
Daniele