Some websites, like rapidshare, give access to their content using JavaScript-based timers.
This is impossible to circumvent, for someone like me who doesn't really know how web browsers exactly work.
I'd be grateful if someone could provide me with a helpful article explaining how to handle this obstacle (scripts and cookies).
Editor's note: The title was "Automating server-side javascript", which is not technically correct based on the rest of the question. But I'm leaving the old title text here, in case other users search with the same notions in mind.