A few very, very basic Javascript questions.

Hi,
I'm able to muddle through Javascript and get things to work but I don't really know what I'm doing.

Questions:
What does the windows. do? As in:

Code:

window.menu.document.open("text/html");

I'm guessing that this works against the browser window itself and not the HTML form. Is that correct?

Does document. refer to the HTML form?

I've seen parent. and windows.parent. when working with frames. Is parent. only for frames?

Where might a good site be to answer questions like these?

Thanks,
Al.