> I've been mirroring something from geocities,
> and httrack removes some html (script/noscript/img)
> added by server.

I doubt this.  While httrack will modify some links, I doubt is removes
anything.

How are you determining this? Comparing the mirrored source to the browser's?
More likely, the site is sending different pages depending on the clients
browser ID.

Try changing options -> browser ID to match your browser