function affichage_popup(nom_de_la_page, nom_interne_de_la_fenetre,width_window,height_window)
{
var Nom_fenetre = window.open (nom_de_la_page, nom_interne_de_la_fenetre, config='height='+height_window+', width='+width_window+', toolbar=no, menubar=no, scrollbars=yes, resizable=no, location=no, directories=no, status=no')
Nom_fenetre.focus();
}