JAVASCRIPT判读IE是否禁用了Cookie

<script type="text/javascript">

      function CookieEnable()
      {
        var result=false;
        if(navigator.cookiesEnabled)
          return true;
        document.cookie = "testcookie=yes;";
        var cookieSet = document.cookie;
        if (cookieSet.indexOf("testcookie=yes") > -1)
          result=true;
        document.cookie = "";
        return result;
      }

      if(!CookieEnable())
      {
        alert("对不起，您的浏览器的Cookie功能被禁用，请开启");
      }
</script>