Non-invasive scripting. Duplicating the DOM.

stony_dreams <[email protected]>
Newsgroups gmane.comp.mozilla.devel.dom
Message-ID <[email protected]>
Hello,

My extension adds in a lot of extra information in the DOM which are
required by my project and these changes sometime change the layout of the
page (For example when in certain cases an extra node is added). 

Isn't there a way to create a new object having the entire DOM tree and make
changes to it, without affecting the actual DOM of the page?
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