Reddit - Only show comment score post vote

// ==UserScript==
// @name           Reddit - Only show comment score post vote
// @namespace      gavin19
// @description    Comment scores hidden by default. Votes show after voting.
// @match          http://*.reddit.com/*/*/comments/*
// @include        http://*.reddit.com/*/*/comments/*
// @version    1.0
// ==/UserScript==

var commentDisplay = {

    hideScore: function(x) {
        for(var i=0,lenx=x.length;i<lenx;i++){
            if(x[i]){
                        x[i].style.display="none";
                    }
        }
    },
    init: function() {
        document.body.addEventListener('DOMNodeInserted', function(ev) {
            if ((event.target.tagName == 'DIV') && (/even/ig.test(event.target.getAttribute('class')))) {
                var x = ev.target.querySelectorAll('.score');
                commentDisplay.hideScore(x);
            }
        }, false);
        var x = document.querySelectorAll('.commentarea:not(.side) .score.unvoted');
        this.hideScore(x);
    }
}
commentDisplay.init();