Use WWW::Mechanize::Firefox, loads the page, interprets the javascript, then you use 
javascript:(function(){
alert(
    document.documentElement.textContent
);
})()

[download]
to get the text.

Also, see how these guys solve the problem http://crawler.archive.org// http://dev.w3.org/cvsweb/, http://httrack.com/

In reply to Re: (almost) preserving a web page by Anonymous Monk
in thread (almost) preserving a web page by punkish

Title:
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