function OpenOeuvre (nom) {
  url="oeuvre.php?fichier="+nom;
	var oeuvre=window.open(url,"Oeuvre","scrollbars=yes,resizable=no,toolbar=no,status=no,menubar=no,location=no,directories=no,width=720,height=420");
	window.onerror = null;
	var v_X = (parseInt (screen.width,'px') - 720) / 2;
	var v_Y = (parseInt (screen.height,'px') - 420) / 2;
	oeuvre.moveTo (v_X,v_Y);
	oeuvre.focus();
}