public static SeleniumUtil initFirefoxDriver(String installationPath) throws IOException {

                FirefoxBinary binary = null;
                if (System.getProperty("os.name").startsWith("Windows")) {
                        binary = new FirefoxBinary(new File(installationPath + "/firefox.exe"));
                } else {
                        binary = new FirefoxBinary(new File(installationPath + "/firefox"));
                }

                FirefoxProfile profile = new FirefoxProfile();

                File dir = new File(installationPath + "-addons");
                File[] addonFiles = dir.listFiles(FileUtil.getExtensionFilter(".xpi"));
                for (File addonFile : addonFiles) {
                        profile.addExtension(addonFile);
                }
                profile.setPreference("extensions.firebug.currentVersion", "1.9.2b1");

                // wait times out after 5 seconds
                return new SeleniumUtil(new FirefoxDriver(binary, profile), 5);

                // driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);
        }