Script Summary:
Demo at http://www.narihiro.info/resource/googleshortcu...
Add keybind(j,k,shift,enter) to Google search result.
focus to serch word input area is "shift" key.
Add keybind(j,k,shift,enter) to hatena bookmark.
edit to comment is "shift" key.
choice next or prev element is "j" "k" key.
link open is "enter" key.
