function localpost(email_addr, promo, source) {

  var url = 'localpost.php';
  var pars = 'email_addr=' + email_addr;
  pars += '&promo=' + promo;
  pars += '&source=' + source;
  pars += '&ms=' + new Date().getTime();
  var myAjax = new Ajax.Request(url, { method: 'post', parameters: pars, asynchronous: false });
}