[Freeswitch-users] Executing Javascript before a call's answered

Hi - I'm trying to build a simple switching application, controlled by a bit of Javascript, but I'm stuck on how to avoid answering the inbound leg until the outbound one's answered - ideally, I want to be able to ship early media from the outbound leg back to the original caller until the outbound leg's answered, and then (and only then) answer the inbound one. Problem is that the inbound leg is answered before my Javascript's called, as far as I can tell, which leaves me a bit stumped. Any pointers as to what I should do gratefully received. Thanks -- Dave