Are you asking if Firefox will download while you are working somewhere else? Yes. Downloads will continue as long as there is no trouble.

Thanks for reply, no I am talking about a way to retrieve the browser data and use features of Firefox to save archives of web pages. I want to create an application that will be able to save complete copies of webpages for something like a database where you keep records like scrapbook or MAFF does (both addons). This application would not have to launch a browser it would take a web address and just deliver the archive to directory of choice. Thanks

Maybe: https://developer.mozilla.org/docs/Mozilla/Projects/XULRunner

This forum is directed toward end user issues, so you may need to use a more developer-oriented forum for assistance with XULRunner and similar/related technologies.

Thanks, that is a helpful start. Is it just the Mozilla site or do some outfits have training for the Mozilla technologies? I have yet to find any. The Mozilla site is a lot of information, sometimes that states that things are as old a 8 years ago. I wish there was a way to know what tutorials and content is most relative. I have learned some things about XUL a while ago, then had some success with small things I wanted to do. However understanding what to focus on for a serious direction is hard at MDN. Does MDN have its own forum? Thanks so much for the help guys!

MDN is now using StackOverflow for development questions: http://stackoverflow.com/questions/tagged/firefox+or+firefox-os+or+html5-apps+or+firefox-developer-tools

But for "direction of Mozilla" questions, you probably would want to use one of the mailing lists: http://lists.mozilla.org/listinfo