public function executeProcesarPago()
 {
     $this->amount = $this->getRequestParameter('amount');
     $this->form_of_payment_id = $this->getRequestParameter('form_of_payment_id');
     $this->pay_concept = PayConceptPeer::retrieveByPK($this->getRequestParameter('pay_concept_id'));
     $cart_id = $this->getRequestParameter('cart_id');
     $cart = CartPeer::retrieveByPK($cart_id);
     if ($this->getRequestParameter('pay_concept_id') == Variables::$PAY_CONCEPT_CARRITO) {
         $this->cart_articles = $cart->getCartArticles();
     }
 }
                  </td>
                  <td style="width:20px"></td>
                  <td>
                    <div style="background:#F2F2F2; border:1px solid #CCC; padding:10px; color:#999; font-size:1.2em; text-align:center">
                      Total a pagar: <font color="#0070BE">$US <?php 
    echo $total;
    ?>
</font>
                    </div>
                  </td>
                </tr>
              </table>
            </td></tr>
          <tr>
            <?php 
    if (CartPeer::getQuantityByIdSession(session_id()) > 0) {
        ?>
              <td align="center" style="padding:8px">
                <a href="<?php 
        echo url_for(array('module' => 'sophiaStore', 'action' => 'vaciarCarrito', 'cart_id' => $cart_id));
        ?>
">
                  <img src="/img/btn_vaciar.gif" border="0" />
                </a>&nbsp;&nbsp;
                <a href="<?php 
        echo url_for(array('module' => 'sophiaStore', 'action' => 'index'));
        ?>
">
                  <img src="/img/btn_seguir.png" border="0" />
                </a>&nbsp;&nbsp;
                <a href="<?php