$myBlock = $this->getLayout()->createBlock('module/admin_productqa_edit');
$myHtml = $myBlock->toHtml();
$response['blck'] = $myHtml;
above code work perfect. I need Given below value return as ajax response from controller in magento. How to set ajax response in magento
$this->_addContent($this->getLayout()->createBlock('module/adminhtml_productqa_edit'));
$this->_addLeft($this->getLayout()->createBlock('module/admin_productqa_edit_tabs'));
Please Give a perfect solution