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When saving in Firefox, in the "save as type" dropdown, it says "web page, complete" which means it saves as much as it can ("web page, HTML" just saves the HTML without the pics etc.) so you should have everything.

One way of verifying that you´ve saved everything is to disconnect your computer from the Internet and clear the browser-cache (in Firefox, press CTRL+SHIFT+DEL and make sure the ´cache´ checkbox is checked and press ´clear private data now´) while the web page in question is not open in any browser-tab. Then load the saved web-page from the hard-disk and check to see if everything is there.
( mistaspakkaman and the inedible shifting caterpillars, Tue 26 Aug 2008, 1:09, Reply)