public static function modalHeader($content, $htmlOptions = array())
    {
        self::addCssClass('modal-header', $htmlOptions);
        $closeOptions = TbArray::popValue('closeOptions', $htmlOptions, array());
        $closeOptions['dismiss'] = 'modal';
        $headingOptions = TbArray::popValue('headingOptions', $htmlOptions, array());
        $closeLabel = TbArray::popValue('closeLabel', $htmlOptions, self::CLOSE_TEXT);
        $closeButton = self::closeButton($closeLabel, $closeOptions);
        self::addCssClass('modal-title', $headingOptions);
        $header = self::tag('h4', $headingOptions, $content);
        return self::tag('div', $htmlOptions, $closeButton . $header);
    }