The title probably isn't very clear, but I haven't been able to find this problem (or I must be having problems figuring out which search strings to use) so I apologize if this has been addressed before, and I apologize if this is the wrong forum since I'm trying to use the XMLHTTPRequest with Javascript and PHP and I couldn't figure out which category my problem belonged to.

I am completely new to AJAX and rusty with Javascript. I...