protected function chromeless() {
		$style = null;
		if ( ! empty( $this->struct['chromeless'] ) ) {
			$style .= '#metabox-' . $this->id() . '{background: transparent none repeat scroll 0 0;border: 0 none;';
			$style .= 'box-shadow: none;margin: 0 0 20px;padding: 0;}';
			$style .= '#metabox-' . $this->id() . ' .handlediv.button-link,';
			$style .= '#metabox-' . $this->id() . ' .handlediv,';
			$style .= '#metabox-' . $this->id() . ' .hndle {display: none;}';
			$style .= '#metabox-' . $this->id() . ' > .inside {padding: 0;}';
		}

		return $style;
	}