public function delete($css_selector) {
		$xpath_selector	= $this->_css_toxpath_selector($css_selector);
		$nodelist		= $this->xpath->query($xpath_selector);
		if ($nodelist->item(0) === null) return 0;
		$counter = 0;
		foreach ($nodelist as $node) {
			$counter++;
			$node->parentNode->removeChild($node);
		}

		return $counter;
	}