Ok thank you very much
I would like to know 2 last things :
-How can I make move the text when I show or hide the picture? I've put the text after the picture and when I hide the picture, the texte doesn't move.
-Is it possible to hide the pictures when I open the document? When I open, I want the pictures to be hidden, and I show if I want.

Thank you again.

Regards,