function updateInfoDiv( id, tn ) {
  url = "get_pic_data.php?file_id=" + id + "&tn=" + tn;

  HTTPUpdate( "pic-info"+id, url );
}

function ratePic( id, rating, tn )
{
  if (tn=="") {
    tn="vg";
  }
  url = "rate_pic.php?file_id=" + id + "&rating=" + rating + "&tn=" + tn;
  //alert( url );
  xmlReq = getXML( url );
  if( xmlReq.readyState == 4 ) {
    updateInfoDiv( id, tn );
  }
  if( xmlReq ) {
    xmlReq.onreadystatechange = function() {
      if( xmlReq.readyState != 4 ) {
	return;
      }
      updateInfoDiv( id, tn );
    }
  }
  return false;
}