Utility to screenscrape sites using javascript ?

[KB]

Hi there,

I have a service I subscribe to that uses javascript to stream news.
Ideally I would like to use python to parse the information for me.
Note there is an option to take a static snapshot of the current
stream but that is still done via Javascript. (I can reference the
snapshot with a unique URL though, so I can pass that to a parser as
long as it can "resolve" the javascript and get at the content)

I had a quick look at Windmill but it doesn't appear to be what I am
looking for. Does anyone else have any experience in screenscraping
sites that utilise javascript? Can you share how you did it and
perhaps some sample code if possible?

Thanks a bunch!