Hello,
I have attached a possible solution to change the recipient of a form, based on the users selection.
It is possible to access (and change) the value of the "action"-parameter via the path "document.my_form.action". To do this, you have to catch the "onSubmit"-event and call a function that changes the recipient. Please be aware: you have to return "true" by the function to send the form ("false" stops sending the form).
Cheers Luke