//
        var popup_window = null;
	function popup(status,url,titu) {
	if(status != 0) {
		if(popup != null) popup.focus(); 
		else { 
		var popup = open(url, titu, "width=500,height=500,scrollbars=yes,resizable=no,top=3,left=3");
                popup_window = popup;
                popup.focus();
		}
	} else {
		if(popup_window != null) popup_window.close();
		}
	}

//