Using MOD Rewrite to rewrite user requests only

Question

Hi

I use this:

RewriteEngine on
RewriteCond %{REQUEST_FILENAME} !-d
RewriteCond %{REQUEST_FILENAME} !-f
RewriteRule ^(.*)$ index.php?action=$1 [QSA,L]

Which works as it is supposed to (makes www.example.com/something redirect to : index.php?action=something). I want to save each request in a DB.So if i insert the $_GET['action'] variable to the DB, instead of "something" i get these:

something

template/img/pagination.gif

template/img/pagination-item.gif

favicon.ico

and anything that gets requested by my site's files (css for example). Is there a way to filter the requests so that I only get the user generated requests (in my case: "something") and not the browser's requests?

I got stuck on this one.