function winOpen(url, largeur, hauteur){
      gauche = (screen.width/2)-(largeur/2);
      haut = (screen.height/2)-(hauteur/2);
      window.open(url,"popup","height="+hauteur+",width="+largeur+",status = no,toolbar = no,menubar = no,location = no,resizable = no,titlebar = no,scrollbars = yes,fullscreen = no,top ="+haut+",left ="+gauche);
   }
   
function Fermer()
{
opener=self;
self.close();
}