function make_inviz()
   local outfit_act = db.actor:item_in_slot(6)
   local hud = get_hud()
   local cs = hud:GetCustomStatic("cs_inviz")
   if cs == nil then
    hud:AddCustomStatic("cs_inviz", true)
    cs = hud:GetCustomStatic("cs_inviz")
   end
     

   if (outfit_act == nil) then
    if db.not_inviz == false then   
     idle_time = 1
     range = 60
     db.game_time = game.get_game_time()
     local msg = string.format("")
     if cs ~= nil then   
      cs:wnd():SetText(msg)   
      cs = nil
     end
     level.remove_pp_effector(1111)
     db.not_inviz = true   
     db.make_inviz = false
    end
   else
    if outfit_act:section()=="mon_nano_inviz"  then
     if db.make_inviz == false then   
      range = 2
      idle_time = 27*60   
      db.game_time = game.get_game_time()
      level.add_pp_effector ("teleport.ppe", 1111, false)
      level.set_pp_effector_factor(1111, 1.0)
      db.make_inviz = true
      db.not_inviz = false
      db.tell_90_inviz = false
      db.tell_finish_inviz = false
     end
    else
     if db.not_inviz == false then   
      idle_time = 1
      range = 60
      db.game_time = game.get_game_time()
      local msg = string.format("")
      if cs ~= nil then   
       cs:wnd():SetText(msg)   
       cs = nil
      end
      level.remove_pp_effector(1111)
      db.not_inviz = true
      db.make_inviz = false
     end
    end
   end
     

   if (db.make_inviz and not db.tell_finish_inviz and not db.not_inviz) then
    local diff_sec = game.get_game_time():diffSec(db.game_time)
      
    if not db.tell_90_inviz and diff_sec >= idle_time*0.9 then
     local msg = string.format("Вас могут увидеть!")
     if cs ~= nil then    cs:wnd():SetText(msg)    end
     db.tell_90_inviz = true
    end

    if db.tell_90_inviz and diff_sec >= idle_time then
     range = 60
     local msg = string.format("")
     if cs ~= nil then    cs:wnd():SetText(msg)    end
     cs = nil
     db.tell_finish_inviz = true
     level.remove_pp_effector(1111)
    end
   end
      
   db.tormoz = db.tormoz + 1

   if db.tormoz >= 500 then
    local object_all
    for k, v in pairs (db.storage) do
     object_all = level.object_by_id(k)

     if object_all and (IAmAMonster[object_all:clsid()] or IAmAStalker[object_all:clsid()]) and object_all:alive() then
      object_all:set_range(range)
     end
    end
    db.tormoz = 0
   end

end