JSVIEW and Firefox

I have a family history web site http://freepages.rootsweb.com/~lankshear/ created with an html editor (Frontpage - could be Nvu etc). As I publish from my hard drive, I have a copy there and I like to navigate to files I want to edit using my web browser.
MSIE always allowed this as it had an Open in Editor icon ie Frontpage or whatever you set up in options.
BUT I have been finding Ie7 unstable and wanted to use Firefox.

But I could not see a way to open my files in Frontpage.
Anyhow I just found an add on JSVIEW

https://addons.mozilla.org/firefox/2076/

the options include pick your own editor. So now I just right click on the page when in Firefox
select Jsview and up comes FP.
Also CSS support and other features which I have yet to explore