Carbonite. It is a modular questing addon. The link is to a search of WoWI for Carbonite. It has "adjustable" maps, and unless they are locked in place can be moved, or sized, at any time.
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Ahhhh, the vagueries of the aging mind. Wait.... What was I saying?
Carbonite <----- GitHub main module (Maps ONLY) download link. The other modules are also available on GitHub.
Carbonite-CLASSIC<----- GitHub link to Carbonite Classic. Thanks to ircdirk for this!