document.observe('dom:loaded', function() {
  $$('a.newwin').invoke('observe', 'click', function(event) {
    window.open(this.href);
    event.stop();
  });

  var shippingInfo = $('shipping-info');
  if (shippingInfo) {
    shippingInfo.observe('click', function(event) {
      window.open(this.href, 'shippingInfoWindow', 'height=328,width=544,scrollbars=1');
      event.stop();
    });
  }
  var closeWindow = $('close-window');
  if (closeWindow) {
    closeWindow.observe('click', function(event) {
      window.close();
      event.stop();
    });
  }
});