[Javascript] iframe question

[Michael Hanna]

hi all, I'm new to this list and javascript. I do PHP scripting so I 
have some fundamentals at least.

my question is thus. I have a form to enter Events in an iframe. I want 
to POST to PHP_SELF, so that the new Event appears later on in the 
page/iframe.

see

http://www.siddha.ca/sites/3p94proto/

here's the kicker: how do I also send information to the middle 
iframe(which is a calendar view) to also reflect the change in the DB.

The middle iframe needs to simply reload itself, just in case the event 
appears in the calendar.

Any suggestions?
Michael