Gathering data for evaluating website's accessibility, and evaluating it

Is anyone aware of any kind of ressources (projects, books, academic papers, etc) on inspecting a website's accessibility with javascript? (fully ajaxified websites, otherwise it wouldn't be possible with the precision I wish). I'm especially interested in evaluating the anchor paths followed by the visitor (read: graph theory).

Note: I开发者_如何学JAVA won't have control over the visitors' behavior, nor will they be instructed on what they have to do. I'll evaluate it "out in the wild".

Thanks.

Google Analytics can be extended using API