/**
  * Gets default card data or empty strings if not applicable
  * 
  * @return Varien_Object
  */
 public function getDefaultCartData()
 {
     $params = new Varien_Object();
     if ($this->isEditMode()) {
         $creditCard = $this->creditCard();
         $billingAddress = $creditCard->billingAddress;
         $params->setExpDate($this->escapeHtml($creditCard->expirationDate));
         $params->setIsCCDefault($creditCard->isDefault() ? true : false);
         $params->setCartholder($this->escapeHtml($creditCard->cardholderName));
         $params->setFirstName($this->escapeHtml($billingAddress->firstName));
         $params->setLastName($this->escapeHtml($billingAddress->lastName));
         $params->setCompany($this->escapeHtml($billingAddress->company));
         $params->setLocality($this->escapeHtml($billingAddress->locality));
         $params->setRegion($this->escapeHtml($billingAddress->region));
         $params->setPostalCode($this->escapeHtml($billingAddress->postalCode));
         $params->setStreetAddress($this->escapeHtml($billingAddress->streetAddress));
         $params->setExtendedAddress($this->escapeHtml($billingAddress->extendedAddress));
         $params->setCountryCodeAlpha2($this->escapeHtml($billingAddress->countryCodeAlpha2));
         $params->setRegionId($this->getRegionIdByName($billingAddress->region));
     }
     if ($params->getExpDate()) {
         list($defaultExpMonth, $defaultExpYear) = explode('/', $this->escapeHtml($params->getExpDate()));
         $params->setExpMonth($defaultExpMonth);
         $params->setExpYear($defaultExpYear);
     } else {
         $params->setExpMonth(Mage::helper('braintree_payments')->getTodayMonth());
         $params->setExpYear(Mage::helper('braintree_payments')->getTodayYear());
     }
     return $params;
 }