How to find an element by name using Nokogiri?

<input type="Checkbox" checked="" name="new">

if I have the above html in a document, how would I find it by searching for its name attribute?

Edit 1: Clarif开发者_Python百科ied that I was looking for a solution using Nokogiri

$agent.page.at('[@name="new"]')

That should do the trick, where $agent is a variable containing the Mechanize agent