$ sudo yum install anthy-el
(set-language-environment "Japanese")
(push "/usr/local/share/emacs/site-lisp/anthy/" load-path)
(load-library "anthy")
(setq default-input-method "japanese-anthy")
(global-set-key "\C-o" 'toggle-input-method) ;Ctrl-o 日本語on/off