public function render(Varien_Object $row)
 {
     $mode = $this->getColumn()->getmode();
     $retour = '';
     switch ($mode) {
         case 'selected':
             $retour = '<a href="' . $this->getUrl('adminhtml/sales_order/view', array('order_id' => $row->getorder_id())) . '">' . $this->__('View order') . '</a>';
             $retour .= '<br><a href="' . $this->getUrl('OrderPreparation/OrderPreparation/RemoveFromSelection', array('order_id' => $row->getorder_id())) . '">' . $this->__('Remove') . '</a>';
             break;
         case 'fullstock':
             $retour = '<a href="' . $this->getUrl('adminhtml/sales_order/view', array('order_id' => $row->getopp_order_id())) . '">' . $this->__('View order') . '</a>';
             $retour .= '<br><a href="' . $this->getUrl('OrderPreparation/OrderPreparation/AddToSelection', array('order_id' => $row->getopp_order_id())) . '">' . $this->__('Select') . '</a>';
             break;
         case 'stockless':
             $retour = '<a href="' . $this->getUrl('adminhtml/sales_order/view', array('order_id' => $row->getopp_order_id())) . '">' . $this->__('View order') . '</a>';
             $retour .= '<br><a href="' . $this->getUrl('OrderPreparation/OrderPreparation/AddToSelection', array('order_id' => $row->getopp_order_id())) . '">' . $this->__('Select') . '</a>';
             break;
         case 'ignored':
             $retour = '<a href="' . $this->getUrl('adminhtml/sales_order/view', array('order_id' => $row->getopp_order_id())) . '">' . $this->__('View order') . '</a>';
             $retour .= '<br><a href="' . $this->getUrl('OrderPreparation/OrderPreparation/AddToSelection', array('order_id' => $row->getopp_order_id())) . '">' . $this->__('Select') . '</a>';
             break;
     }
     return $retour;
 }