protected function _toHtml()
{
//-------------------------------
$url = Mage::helper('M2ePro/View_Development')->getPageUrl();
$data = array('label' => Mage::helper('M2ePro')->__('Control Panel'), 'onclick' => 'window.open(\'' . $url . '\')', 'class' => 'development button_link', 'style' => 'display: none;');
$buttonBlock = $this->getLayout()->createBlock('adminhtml/widget_button')->setData($data);
//-------------------------------
$generalBlock = $this->getLayout()->createBlock('M2ePro/adminhtml_general');
return $generalBlock->toHtml() . '<div id="development_button_container" style="text-align: right; margin: -10px 0 8px 0; display:none;">' . $buttonBlock->toHtml() . '</div>' . parent::_toHtml();
}
