function popup(page, largeur, hauteur, x, y)
{
var top=(screen.height-hauteur)/2;

var left=(screen.width-largeur)/2;

   window.open(page, "newWin", "toolbar=no,menubar=no,location=no,directories=no,status=no,scrollbars=yes,resizable=no,width="
              +largeur+",height="+hauteur+",top="+top+",left="+left);
}

function PopupCentrer(page,largeur,hauteur,options) {

var top=(screen.height-hauteur)/2;

var left=(screen.width-largeur)/2;

window.open(page,"","top="+top+",left="+left+",width="+largeur+",height="+hauteur+","+options);

}