function OpenNamedPopup(url, name, width, height) {
			var top=Math.round((screen.height-height)/2);
			var left=Math.round((screen.width-width)/2);
			var wnd=this.open(url, name, "top="+top+",left="+left+",width="+width+",height="+height+",buttons=no,scrollbars=yes,location=no,menubar=no,resizable=no,status=no,directories=no,toolbar=no");
			wnd.focus();
		}