Welcome to WebmasterWorld Guest from 188.8.131.52
So is it possible to access an external CSS file and determine if there are any relative paths based on the required rule that if a line contains the string "url" it must match "url(http://"?
It seems like a lot of work, then what happens if they change the file?
Would this be a complicated regex? Would it be difficult to setup some sort of Apache anti-404 script that disallows images to load from my site if the referrer is a cross-domain CSS file? If that were possible I could skip the PHP script altogether possibly. I think off-hand at least.