protected function constructJqueryAjaxCall($url)
{
$id = WidgetId::get();
return "var widgetTimer{$id} = setInterval(function() {" . 'if (window.$) {' . "\$('#{$this->getContainerId()}').load('{$url}');" . "clearInterval(widgetTimer{$id});" . '}' . '}, 100);';
}