How to find what are the implicit functions/methods in java script

Thanks for your interest in this topic.
I want to know how can we find the implicit functions/methods in javascript. Is there any specification document?? I know it is browser dependent too.
Thanks in Advance.
shoban kumar sriram

I always say look at this reference:
http://www.echoecho.com/jsquickref.htm

Better yet, got to the source - Netscape Documentation
Tom Blough

Both the references are good
thanks Eric and Tom.
shoban