protected function _prepareColumns() { parent::_prepareColumns(); $this->removeColumn('vendor_id'); $this->getColumn('action')->setActions(array(array('caption' => Mage::helper('csmarketplace')->__('View'), 'url' => array('base' => '*/adminhtml_vpayments/details'), 'onClick' => "javascript:openMyPopup(this.href); return false;", 'field' => 'id'))); return $this; }