var mafenetre = null; // variable globale

	function openRequestedPopup(strUrl, strWindowName) {
		
	  if((mafenetre == null) || (mafenetre.closed)) {
		 mafenetre = window.open(strUrl, strWindowName,'height=450,width=450,resizable=yes,scrollbars=no,status=no,directories=no,location=no,menubar=no,toolbar=no');
	  }
	  else {
		  mafenetre.focus();
	  };
	}