// ==UserScript==
// @name           barcode
// @namespace      deathbyescalator.com
// @description    adds a barcode to the page
// @include        *
// ==/UserScript==

var image_url = "http://chart.apis.google.com/chart?chs=150x150&cht=qr&chl="+encodeURI(document.location)+"&choe=UTF-8&version=10"
var navbar, newElement;
navbar = document.body
if (navbar) {
    newElement = document.createElement('img');
    newElement.src = image_url
    navbar.parentNode.insertBefore(newElement, navbar.nextSibling);
}