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>