display the ad
// ==UserScript==
// @name layerd_disabled
// @namespace shjanken
// @include http://blog.csdn.net/fengbingchun/article/details/51872436
// @version 1
// @grant none
// @description:en display the ad
// @description display the ad
// ==/UserScript==
var layerd = document.getElementById('layerd');
if (layerd)
layerd.style.visibility = 'hidden'