/** * Override method to output our custom HTML with JavaScript * * @param Varien_Data_Form_Element_Abstract $element * * @return String */ protected function _getElementHtml(Varien_Data_Form_Element_Abstract $element) { if (!Mage::app()->isSingleStoreMode()) { $request = Mage::app()->getRequest(); if (!$request->getParam('store') && !$request->getParam('website') && !$request->getParam('group')) { $element->setCanUseDefaultValue(false)->setDisabled('disabled')->setValue(null); } } return parent::_getElementHtml($element); }