function ageverify(sTemplate, sHTTPreferer) {
  if ((sHTTPreferer == undefined) || (sHTTPreferer == '')) {
    sHTTPreferer = top.document.referrer;
  }

  iframeSRC = 'http://ageverify.usa.heineken.com/verify.php?template=' + escape(sTemplate) + '&next=' + escape(top.location) + '&referer=' + escape(sHTTPreferer);
  document.write('\
    <iframe id="iframe" width="1" height="1" marginwidth="0" marginheight="0" src="' + iframeSRC + '" name="agechecker" frameborder="0" scrolling="no">\
    Your browser doesn\'t support iframes.\
    </iframe>\
  ');
}