Add express checkout button on any page

Hi

Is there a way to add the EC button on any page of the site rather than just the cart.

I've tried adding:

if (commerce_paypal_ec_enabled()) {
  global $user;
  $order_id = commerce_cart_order_id($user->uid);
  $order = commerce_order_load($order_id);

  // And Express Checkout is also available as a payment option in checkout...
  if (commerce_paypal_ec_enabled($order)) {
    // Add the Express Checkout form as a suffix to the cart form.
    $payment_method = commerce_payment_method_instance_load('paypal_ec|commerce_payment_paypal_ec');

    $ec_form = drupal_get_form('commerce_paypal_ec_order_form', $payment_method, $order);
    $ecb .= drupal_render($ec_form);

    // Add the Bill Me Later form with a separator if enabled.
    if (!empty($payment_method['settings']['enable_bml'])) {
      $bml_form = drupal_get_form('commerce_paypal_bml_order_form', $payment_method, $order, TRUE);
      $ecb .= drupal_render($bml_form);
    }
  }
  echo $ecb;
}

into a php block, which renders the button fine but when submitted just comes back to the same page with no redirect. I looked at commerce_paypal_ec_order_form_submit but cannot see why this will not work.

Any help would be really great, thanks .