Comment 174 for bug 747197

(In reply to David Baron [:dbaron] from comment #148)
> The problem is really that there's no good approach here with the current
> "Save As, Complete" model. If we fix this, we'll break the CSS working in
> other browsers.
>
> A better solution would be replacing Save As, Complete (which attempts to
> rewrite the pages to fix up URLs) with a cross-browser package format for
> saved documents (which could save resources as they were).

Consider how some browsers are closed source and written to the interests of their owners and how they implement either CSS or JS compared to the standards ... duh

On the other hand, I would strongly vote against such a method, one reason being the examination of various resource files related to a page.

I use an extension called Web Developer Toolbar. This extension has a neat feature called "view generated source". This contains all content generate/modified by JS as displayed. Based on this one could easily reference each resource file (image/css/etc) for saving.

Also, saving locally a webpage, in principle, does not imply that the entire webpage functionality will be preserved for the simple reason that some features require online interractivity with the source server, and this is impossible to replicate in a local save and offline viewing scenario.