I got a quite huge JS library whose details I need to be able to understand. Unfortunately, I am quite new to Js development since I am coming from Flash and Flex. It is very hard for me to orient around all the files of the framework. I miss one great advantage of the AS3 support tools - being able to see the actual definition of a given piece of code, and thus start my journey from somewhere. Whatever file I tend to pick up, I have the feeling that they are all mixed up, and I am somewhere in the middle. methods are being called, properties are being set, however, I don't even know where to look for the definitions of those things. I am desperate.
In general, what tips could you suggest for browsing and studying large and distributed pieces of JS code?