Accept mouse right button click on Gmarket

gmarket-mouse-right-click-enabler.js

// ==UserScript==
// @name         Gmarket Mouse Click Enabler
// @version      1.1.0
// @description  accept mouse right button click
// @match        http://item.gmarket.co.kr/*
// @match        https://item.gmarket.co.kr/*
// @match        http://*.auction.co.kr/*
// @match        https://*.auction.co.kr/*
// @grant        none
// @run-at       document-end
// ==/UserScript==

(function () {
    'use strict';

    var fn = function () {
        // disable function
        var mouseRightButtonDisabled = function () {};

        // show context menu
        document.oncontextmenu = function () { return true; };
    };

    var el = document.createElement('script');
    el.type = 'text/javascript';
    el.textContent = 'var mouseRightButtonDisabled = function () {}; document.oncontextmenu = function () { return true; };';
    document.body.appendChild(el);

    window.addEventListener('DOMContentLoaded', fn, false);
})();