Reddit - Auto-hide post voting.

// ==UserScript==
// @name           Reddit - Up/downvotes hide post
// @author      gavin19
// @description    Hides post upon voting.
// @match          http://*.reddit.com/*
// @include      http://*.reddit.com/*
// @match          https://*.reddit.com/*
// @include      https://*.reddit.com/*
// @version    1.0
// ==/UserScript==
var scoreHidesPost = {

    addArrowListeners: function(ele) {
        var clickEvent = document.createEvent("MouseEvents");
        clickEvent.initEvent("click", false, true);
        for (var x = 0, lenx = ele.length; x < lenx; x += 1) {
            ele[x].addEventListener('mouseup', function() {
                this.parentNode.parentNode.querySelector('.hide-button a').dispatchEvent(clickEvent);
            });
        }
    },
    init: function() {
        var ele, loc = window.location.href;
        if (!(loc.match(/\/comments\//i)) || !(loc.match(/\/user\//i)) || !(loc.match(/\/message\//i))) {
            ele = document.querySelectorAll('.midcol .arrow');
            this.addArrowListeners(ele);
            document.body.addEventListener('DOMNodeInserted', function(event) {
                if ((event.target.tagName == 'DIV') && (event.target.getAttribute('id') && event.target.getAttribute('id').indexOf('siteTable') != -1)) {
                    ele = event.target.querySelectorAll('.midcol .arrow');
                    scoreHidesPost.addArrowListeners(ele);
                }
            }, true);
        }
        }
    };
    if (document.body) {
        setTimeout(function() {
            scoreHidesPost.init();
        }, 3000);
    }
    else {
        window.addEventListener("load", function() {
            scoreHidesPost.init();
        }, false);
    }