I completely understand, and for what it's worth you're right on about regular AJAX jQuery stuff.
The way it works is that POST vars are only available WITHIN the action function I guess... I was trying to grab them in the global scope of functions.php but you cannot. In fact doing so broke my site. Once I tried using them within the function they were available.
Last edited by Webenvelopment; 08-04-2013 at 05:56 PM..