Javascript's equality operator(==) and strict equality operator(===) are always confusing and the results of these operations have made even experienced programmers scratch their heads. Especially the ones that spent a lot of time writing traditional Java code because, lets face it, anything that is not Java is "*strange*" and difficult for us, the java programmers.

Here is a nice article that I recently came across which details the java script equality operators with some simple examples. Hope this is helpful!

http://javascriptweblog.wordpress.com/2011/02/07/truth-equality-and-javascript/