/**
  * Return header text
  *
  * @return string
  */
 public function getHeaderText()
 {
     if (Mage::getModel('ups_address_validator/config')->isEnabled()) {
         $_text = parent::getHeaderText();
         $_text .= $this->getLayout()->createBlock('adminhtml/widget_button')->setData(array('label' => Mage::helper('customer')->__('Validate Address'), 'id' => 'rw_validate_address' . $this->getTemplatePrefix(), 'name' => 'rw_validate_address', 'element_name' => 'rw_validate_address', 'class' => 'scalable save', 'style' => 'float:right; margin-left: 10px;', 'onclick' => 'return RocketWeb.Address.validate(\'order-billing_address\',\'' . Mage::helper('adminhtml')->getUrl('adminhtml/address/validate') . '\', \'order\');'))->setAfter("-")->toHtml();
         return $_text;
     }
     return parent::getHeaderText();
 }