(define-key keymap "l" 'wl-message-toggle-disp-summary)
(define-key keymap [mouse-4] 'wl-message-wheel-down)
(define-key keymap [mouse-5] 'wl-message-wheel-up)
(define-key keymap "l" 'wl-message-toggle-disp-summary)
(define-key keymap [mouse-4] 'wl-message-wheel-down)
(define-key keymap [mouse-5] 'wl-message-wheel-up)