Avatar uncaching script

// ==UserScript==
// @name			Facepunch Avatar UnCache
// @description		        Makes avatars update automatically when you change yours (clientside)
// @include			http://*.facepunch*.com/*
//
// ==/UserScript==

var imgs1 = document.getElementsByClassName('userinfo');
var timestamp = new Date().getTime();

for (var i = 0, len = imgs1.length; i < len; i++) {
    imgs1[i].getElementsByTagName('img')[0].src += "?timestamp=" + timestamp;
}