A form's action

[KevinM1]

I'm using PHP-Fusion to power a client's site.  In it, I'm using an event calendar infusion (addon).  I'd like to modify it slightly, but first I need to know if the following is possible:

 

The infusion's main processing is done by a sticky form, so that form's action is of the script itself.  Is it possible to transmit some of that info to another script if the submit button is pressed?  I need the functionality of the form to remain the same, so adding another submit button won't help me.  In other words, can a form have two actions -- one explicit in the form's (X)HTML, and another implicitly declared somewhere else?