(function() {
    var code = '(' + function() {
        // Remove Selenium artifacts (except webdriver - handled by binary patch)
        var toDelete = ['cdc_', '$cdc_', 'wd_', 'selenium', '__webdriver_script_fn', '__driver_evaluate', '__webdriver_evaluate', '__selenium_evaluate', '__fxdriver_evaluate', '__driver_unwrapped', '__webdriver_unwrapped', '__selenium_unwrapped', '__fxdriver_unwrapped', '__webdriver_script_function', '__webdriver_script_func', '__webdriver_script_fn', '__fxdriver_athena_', '_Selenium_IDE_Recorder', '_selenium', 'calledSelenium', '$cdc_asdjflasutopfhvcZLmcfl_', '$chrome_asyncScriptInfo', '__$webdriverAsyncExecutor', '__nightmare', '_phantom', 'callPhantom', '__lastWatirAlert', '__lastWatirConfirm', '__lastWatirPrompt'];
        toDelete.forEach(function(key) {
            if (window[key]) delete window[key];
            if (document[key]) delete document[key];
        });

        // Clean up document properties
        for (var key in document) {
            if (key.match(/\$[a-z]dc_/) && document[key]) {
                delete document[key];
            }
        }
    } + ')();';

    var script = document.createElement('script');
    script.textContent = code;

    var target = document.documentElement;
    if (target) {
        target.insertBefore(script, target.firstChild);
        script.remove();
    }
})();