>> require "hpricot" => true >> doc = Hpricot('<p>foo1</p><p>foo2</p>') => #<Hpricot::Doc {elem <p> "foo1" </p>} {elem <p> "foo2" </p>}> >> doc.get_element_by_id('p') => nil >> doc = Hpricot('<a id=0><b><a id=1 /></b><c id=2 /></a>') => #<Hpricot::Doc {elem <a id="0"> {elem <b> {emptyelem <a id="1">…</a></b></hpricot::doc>