function rewriteRssLink(yhweatherId) {
  var rssDetailElement = document.getElementById("forecast"+yhweatherId);
  if ( rssDetailElement ) {
    var anchors = rssDetailElement.getElementsByTagName("a");
    if ( anchors ) {
      for ( var i=0; i<anchors.length; i++ ) {anchors.item(i).target = "_blank";}
    }
  }
}