code: func FindParent(node *html.Node, matcher Matcher) (n *html.Node, ok bool) {
  	for p := node.Parent; p != nil; p = p.Parent {
  		if matcher(p) {
  			return p, true
  		}
  	}
  	return nil, false
  }
docs: // FindParent searches up HTML tree from the current node until either a
  // match is found or the top is hit.