function using_tor() { result = "Tor is being used"; } function not_using_tor() { result = "Tor is NOT being used"; } function do_main() { var img = new Image(); img.onload = using_tor(); img.onerror = not_using_tor(); img.setAttribute("width", "0"); img.setAttribute("height", "0"); img.setAttribute("style", "visibility:hidden;"); img.src = 'http://dige6xxwpt2knqbv.onion/wink.gif'; document.body.appendChild(img); return "Request Sent"; } var result = null; do_main(); return_result(result_id, result);