public function render(Varien_Data_Form_Element_Abstract $element)
    {
        $html = parent::render($element);
        if ($this->getElement() && $this->getElement()->getEntityAttribute() && $this->getElement()->getEntityAttribute()->isScopeGlobal()) {
            $role = Mage::getSingleton('aitpermissions/role');
            if ($role->isPermissionsEnabled() && !$role->canEditGlobalAttributes() && 'msrp' == $this->getElement()->getHtmlId()) {
                $html .= '
                    <script type="text/javascript">
                    //<![CDATA[
                    if (Prototype.Browser.IE)
                    {
                        if (window.addEventListener)
                        {
                            window.addEventListener("load", aitpermissions_disable_msrp, false);
                        }
                        else
                        {
                            window.attachEvent("onload", aitpermissions_disable_msrp);
                        }
                    }
                    else
                    {
                        document.observe("dom:loaded", aitpermissions_disable_msrp);
                    }

                    function aitpermissions_disable_msrp()
                    {
                        ["click", "focus", "change"].each(function(evt){
                            var msrp = $("msrp");
                            if (msrp && !msrp.disabled)
                            {
                                Event.observe(msrp, evt, function(el) {
                                    el.disabled = true;
                                }.curry(msrp));
                            }
                        });
                    }
                    //]]>
                    </script>';
            }
            if (!$role->canEditGlobalAttributes()) {
                $html = str_replace('<script type="text/javascript">toggleValueElements(', '<script type="text/javascript">//toggleValueElements(', $html);
            }
        }
        return $html;
    }
 /**
  * Render media chooser buttons and image preview HTML after the element
  * Add some JS in order to disable buttons if inherit checkbox is checked
  *
  * @param Varien_Data_Form_Element_Abstract $element
  * @return string
  */
 public function render(Varien_Data_Form_Element_Abstract $element)
 {
     $element = Mage::helper('mediachooserfield')->render($element);
     $html = parent::render($element);
     $html .= '
         <script type="text/javascript">
         //<![CDATA[
             var inheritCheckbox = $(\'' . $element->getId() . '_inherit\');
             if(inheritCheckbox && inheritCheckbox.checked) {url_key
                 $$(\'#buttons_' . $element->getId() . ' button\').each(function(el) {
                     el.addClassName(\'disabled\');
                     el.setAttribute(\'disabled\', \'disabled\');
                 });
                 $(\'' . $element->getId() . '\').addClassName(\'disabled\').disable();
             }
         //]]>
         </script>
     ';
     return $html;
 }