Linking to images in dynamic webpages

This is a little tricky to explain but I will try.

We have a employee web directory at work that di开发者_运维百科splays the employee photo and their phone extension number etc. Its a dynamic page written in javascript each page has the same layout but obiously the link to the image is always different.

Now what I wanted to do for some fun was to grab those images to use in our continuous build server (this is something people have requested believe it or not), so that when someone breaks the build I can embed their picture in the broken build email. I can generate the web page link to the persons details page but dont know how to grab the image link from that (there is no obvious naming convention) - I dont have access to the network share where the images are stored but do have permission to embed a link to the in the mail if I can figure it out.

Im flexible with the languages I can use I am just curious how to do this task

The web directory must be making an HTTP request for the image at some point. If you can find out what the details of that request are, then you can make an identical request to fetch the image. The "Web Scraping Proxy" logs HTTP request/responses in the form of Perl code. Set it up, navigate through the web directory to the image, and look in the proxy's log.