function isReferrerExternal()
{
  if (!document.referrer)
    return false;
  var r = /(http:\/\/)?(www\.)?simmcovac.com(\/.*)?$/;
  if (r.test(document.referrer))
    return false;
  document.cookie = "_icm_ad_on=on;path=/";
  return true;
}

$(document).ready(function(){
  if (isICMTrackerAds() || isReferrerExternal()) {
    $('.the_phone').text('416-907-7929');
    $('#header1 img').attr('src', 'images/header-tr.jpg');
  }
});