public function render(Varien_Object $row) { //get row order ids if ($row->getAction()) { return; } $movementIds = $row->getAllMovementId(); $filter = 'movementids=' . $movementIds; $filter = base64_encode($filter); $productUrl = Mage::helper("adminhtml")->getUrl('adminhtml/inr_product/details', array('top_filter' => $filter, "_secure" => Mage::app()->getStore()->isCurrentlySecure())); $html = "<a href='' onclick='window.open( " . "\"" . $productUrl . "\"" . "," . "\"" . $this->__('Order List') . "\"" . "," . "\"" . 'scrollbars=yes, resizable=yes, width=1000, height=600, top=50, left=300' . "\"" . "); return false;' target='_blank'>" . $this->__('Show Product List') . "</a>"; return $html; }