Grid.php

<?php

class Offline_Store_Block_Adminhtml_Store_Grid extends Mage_Adminhtml_Block_Widget_Grid
{

    public function __construct()
    {
        parent::__construct();
        $this->setId('cmsBlockGrid');
        $this->setDefaultSort('store_identifier');
        $this->setDefaultDir('ASC');
    }

    protected function _prepareCollection()
    {
        $collection = Mage::getModel('store/block')->getCollection();
        /* @var $collection Mage_Cms_Model_Mysql4_Block_Collection */
        $this->setCollection($collection);
        return parent::_prepareCollection();
    }

    protected function _prepareColumns()
    {
//        $baseUrl = $this->getUrl();

        $this->addColumn('store_id', array(
            'header'    => Mage::helper('store')->__('Id'),
            'align'     => 'left',
            'index'     => 'store_id',
        ));

        $this->addColumn('name', array(
            'header'    => Mage::helper('store')->__('Name'),
            'align'     => 'left',
            'index'     => 'name',
        ));

        $this->addColumn('country', array(
            'header'    => Mage::helper('store')->__('Country'),
            'align'     => 'left',
            'index'     => 'country'
        ));

        $this->addColumn('city', array(
            'header'    => Mage::helper('store')->__('City'),
            'align'     => 'left',
            'index'     => 'city'
        ));


        $this->addColumn('street', array(
            'header'    => Mage::helper('store')->__('Street'),
            'align'     => 'left',
            'index'     => 'street'
        ));

        $this->addColumn('status', array(
            'header'    => Mage::helper('store')->__('Status'),
            'index'     => 'status',
            'type'      => 'options',
            'options'   => array(
                0 => Mage::helper('store')->__('Disabled'),
                1 => Mage::helper('store')->__('Enabled')
            ),
        ));

        return parent::_prepareColumns();
    }

    /**
     * Row click url
     *
     * @return string
     */
    public function getRowUrl($row)
    {
        return $this->getUrl('*/*/edit', array('store_id' => $row->getId()));
    }

}