bind -n M-l select-pane -L
bind -n M-h select-pane -R
bind -n M-k select-pane -U
bind -n M-j select-pane -D

bind -n M-left select-pane -L
bind -n M-right select-pane -R
bind -n M-up select-pane -U
bind -n M-down select-pane -D