Is all this happening in a "live" site or are you testing locally? I'd assumed live. (Not necessarily open to the public, but online.) How and where you find the logs depends on your host. If you don't have access to the raw logs, change hosts ;)
If you're working on a local pseudo-server like WAMP, the logs are hiding somewhere in its folder.
:: detour to look, because I've never bothered about mine ::
Oh. Guess I'd have to change something in the config file, because I can only find error logs. Those should be enough though, because they say what the request is and what response it gets. (Again: That's for MAMP. My real site logs live in the same place as the real error logs. It's a separate login-- haha --from the site itself.)
You can also use an extension like Firefox's Live Headers to track each request separately. And then save the output for careful reading later.
Is this a hand-coded site or is there a CMS involved?