<form action="<?php echo str_replace('&', '&amp;', $action); ?>" method="post" id="checkout">
  <input type="hidden" name="cmd" value="_xclick" />
  <input type="hidden" name="business" value="<?php echo $business; ?>" />
  <input type="hidden" name="item_name" value="<?php echo $item_name; ?>" />
  <input type="hidden" name="currency_code" value="<?php echo $currency_code; ?>" />
  <input type="hidden" name="amount" value="<?php echo $amount; ?>" />
  <input type="hidden" name="first_name" value="<?php echo $first_name; ?>" />
  <input type="hidden" name="last_name" value="<?php echo $last_name; ?>" />
  <input type="hidden" name="address1" value="<?php echo $address1; ?>" />
  <input type="hidden" name="address2" value="<?php echo $address2; ?>" />
  <input type="hidden" name="city" value="<?php echo $city; ?>" />
  <input type="hidden" name="zip" value="<?php echo $zip; ?>" />
  <input type="hidden" name="country" value="<?php echo $country; ?>" />
  <input type="hidden" name="address_override" value="0" />
  <input type="hidden" name="notify_url" value="<?php echo $notify_url; ?>" />
  <input type="hidden" name="email" value="<?php echo $email; ?>" />
  <input type="hidden" name="invoice" value="<?php echo $invoice; ?>" />
  <input type="hidden" name="lc" value="<?php echo $lc; ?>" />
  <input type="hidden" name="return" value="<?php echo $return; ?>" />
  <input type="hidden" name="rm" value="2" />
  <input type="hidden" name="no_note" value="1" />
  <input type="hidden" name="cancel_return" value="<?php echo $cancel_return; ?>" />
  <input type="hidden" name="paymentaction" value="<?php echo $paymentaction; ?>" />
  <input type="hidden" name="custom" value="<?php echo $custom; ?>" />
</form>
<div class="buttons">
  <table>
    <tr>
      <td align="left"><a onclick="location = '<?php echo str_replace('&', '&amp;', $back); ?>'" class="button"><span><?php echo $button_back; ?></span></a></td>
      <td align="right"><a onclick="$('#checkout').submit();" class="button"><span><?php echo $button_confirm; ?></span></a></td>
    </tr>
  </table>
</div>