redirect.js

(function () {

  var mobileElem = document.getElementById('mobile-link'),
      mobileUrl;

  if (mobileElem !== undefined && mobileElem !== null) {
    mobileUrl = mobileElem.getAttribute('href');
  }

  if (getCookie('noRedirect') !== 'enabled' && mobileUrl !== undefined) {
    (function(a,b){if(/mobile|ip(hone|od|ad)|android|blackberry|iemobile|kindle|netfront|silk-accelerated|(hpw|web)os|fennec|minimo|opera m(obi|ini)|blazer|dolfin|dolphin|skyfire|zune/i.test(a.substr(0,4)))window.location.href=b})(navigator.userAgent||navigator.vendor||window.opera,mobileUrl);
  }
  
  function getCookie(name) {
      var value = "; " + document.cookie;
      var parts = value.split("; " + name + "=");
      if (parts.length == 2) return parts.pop().split(";").shift();
  }
})();