Ok i switch thing up !
I Create new group for non-logged user called visitor only. change setting in joomla for visitor group.
After that i create new menu (with the same name)(but different alias) only for visitor. The news menu item i creat i a alias of the page where the style of the message is good.
And finally change the message with style to a more flexible term ( please login or register to view this page )
After login... the real good item menu appear and every thing is good !
Thanks for you help , hope this post help somebody later.
(sorry for my poor English.... i do my best)
