AJAX & Post Data

Two part question:

#1. I've built a little AJAX app, but the problem is anytime I do an update, I have to delete my temp files before I can see the update. Is there anyway around this?

#2. Is there a way to know all the variables submitted to a form without knowing what the variables are before hand? For example, I have a form, where there are checkboxes. Each checkbox's name is an ID value from the database. When I submit the form, I need to know all the rows that were checked...

*bump*

*bumb again*

Well since nobody helped me I managed to research it and find it myself... here are the answers..

no cache:

Header('Cache-Control: no-cache');

  Header('Pragma: no-cache');

then to get all the checkboxes to another page, name them as follows

<input type=checkbox name=checkbox[$id]>

then in the php page, treat $_POST['checkbox'] as an array.

Hope this helps someone in the future.