function OpenWindow(url,width,height,features) {
  if (!width) { width=630; }
  if (!height) { height=560; }

  if (!features) {
    features="toolbar=no,location=no,resizable=yes,scrollbars=yes";
  }

	winvar = open( url, "", "width="+width+",height="+height+","+features
 );
	return;
}

function open_and_close( url ) {
  opener.location= url;
  window.close();
}