def add_previous_sibling_and_get(node, html)
		result = node.add_previous_sibling(make_node(html, node.document))
		result = result[0] if result.is_a?(Array)
		return result
	end
def add_previous_sibling_and_get(node, html)
		result = node.add_previous_sibling(make_node(html, node.document))
		result = result[0] if result.is_a?(Array)
		return result
	end
For Nokogiri 1.4.0 compatibility