Reddit - Add Context

// ==UserScript==
// @name           Reddit - Add context to links
// @namespace      http://userscripts.org
// @author         gavin19
// @description    Add context to  links that don't have any
// @match          http://*.reddit.com/*/*/comments/*
// @match          https://*.reddit.com/*/*/comments/*
// @include        http://*.reddit.com/*/*/comments/*
// @include        https://*.reddit.com/*/*/comments/*
// @version        1.0
// ==/UserScript==
(function () {
    var addContext = {

        contextLevel: 3, /** Change this value to increase/decrease the context level **/
        processLinks: function ( links ) {
            var i, len,
                a = links || document.querySelectorAll( '.comment .md a[href*="/comments/"]' ),
                cx = '?context=';
            for ( i = 0, len = a.length; i < len ; i +=1 ) {
                if ( a[i].href.indexOf( cx ) === -1 ) {
                    a[i].href += cx + this.contextLevel;
                }
            }
        },
        init: function () {
            var t;
            document.body.addEventListener( 'DOMNodeInserted', function ( e ) {
                t = e.target;
                if ( t.localName === 'div' && t.id && t.id.indexOf( 'siteTable' ) !== -1 ) {
                    addContext.processLinks( t.querySelectorAll( '.comment .md a[href*="/comments/"]' ) );
                }
            }, true );
            addContext.processLinks( document.querySelectorAll( '.comment .md a[href*="/comments/"]' ) );
        }
    };
    if ( document.body && document.querySelector( '.comments-page' ) ) {
        setTimeout(function () {
            addContext.init();
        }, 300);
    }
}());