Raw Source
Intrainos / Mangaumaru Blocking Supporter 

// ==UserScript==
// @name        Mangaumaru Blocking Supporter
// @description Disable Right Click Blocker and Drag Blocker in Marumaru and Mangaumaru, Shencomics
// @include     http://marumaru.in/*
// @include     http://mangaumaru.com/*
// @include     http://shencomics.com/*
// @include     http://*.marumaru.in/*
// @include     http://*.mangaumaru.com/*
// @include     http://*.shencomics.com/*
// @include     https://marumaru.in/*
// @include     https://mangaumaru.com/*
// @include     https://shencomics.com/*
// @include     https://*.marumaru.in/*
// @include     https://*.mangaumaru.com/*
// @include     https://*.shencomics.com/*
// @updateURL   https://openuserjs.org/meta/Intrainos/Mangaumaru_Blocking_Supporter.meta.js
// @downloadURL https://openuserjs.org/install/Intrainos/Mangaumaru_Blocking_Supporter.user.js
// @require     https://gist.github.com/raw/2620135/checkForBadJavascripts.js
// @version     1.0.6
// @run-at      document-start
// @grant       GM_addStyle
// ==/UserScript==

checkForBadJavascripts ( [
    [false, /document\.onkeydown=function\(e\)/, null],
    [false, /document\.ondragstart/, null],
    [false, /document\.oncontextmenu/, null],
    [false, /window\.onload=function\(\)\{disableSelection\(document\.body\)\}/, null],
    [false, /document\.keypress=function\(e\)\{if\(e\.ctrlKey/, null],
    [false, /kpg/i, null],
    [true, /click/, null],
] );