local function on_key_release(key)
    if (key == DIK_keys.DIK_PRIOR) then --PgUp
        game.reload_ui_xml()
        actor_status.deactivate_hud()
        actor_status.activate_hud()
    end
end

function on_game_start()
    RegisterScriptCallback("on_key_release",on_key_release)
end