Hi, I just installed the epubreader firefox extension (https://addons.mozilla.org/en-US/firefox/addon/epubreader/), and added its buffer(s) to my passAllKeys: :autocmd LocationChange .* :js modes.passAllKeys = /mail\.google\.com|chrome:\/\/epubreader/ That enables most of its key bindings, e.g. left and right arrows for chapterwise scrolling, + and - for font size etc. However, neither linewise (up and down arrows) nor pagewise (Page up/down) scrolling is available. I just can't scroll by keyboard. Does anybody have similar, better or worse experience with this extension? Any advice would be highly appreciated. Guido. Vimperator: 3.2 (created: 2011/06/03 11:51:34) Firefox: Mozilla/5.0 (Macintosh; Intel Mac OS X 10.7; rv:6.0.2) Gecko/20100101 Firefox/6.0.2