public function is_auto_height()
    {
        $style = $this->_style;

        return in_array(
            "auto",
            array(
                $style->height,
                $style->margin_top,
                $style->margin_bottom,
                $style->border_top_width,
                $style->border_bottom_width,
                $style->padding_top,
                $style->padding_bottom,
                $this->_containing_block["h"]
            ),
            true
        );
    }