make update button in editor that work with ajax, and so do not rebuild whole page. now it rebuilds whole editor page long time, 1-3 seconds.
then who wants to update his main html content of editor page, still can update page with pressing "enter" on address bar or with refresh button or key. may be that can be useful i.e. if page that is being edited is in that html, i have not checked that. it can be used to "save as html".
as i know already editor automatically saves page draft from time to time with ajax, so should be easy to use that for "update" button also.