[jQuery] How do I filter an XML file?

[victorcorey]

XML sample:
<?xml version="1.0" encoding="UTF-8"?>
<query columns="18" rows="851">
        <row>
                <criteria_txt>(iv)</criteria_txt>
                <danger/>
                <date_inscribed>1983</date_inscribed>
                <http_url>http://whc.unesco.org/en/list/275</http_url>
                <id_number>275</id_number>
                <image_url>http://whc.unesco.org/uploads/sites/site_275.jpg</
image_url>
                <iso_code>ar,br</iso_code>
                <latitude>-28.5433333300</latitude>
                <location>State of Rio Grande do Sul, Brazil; Province of 
Misiones,
Argentina</location>
                <longitude>-54.2658333300</longitude>
                <region>Latin America and the Caribbean</region>
                <revision_extension>bis</revision_extension>
                <secondary_dates>1984</secondary_dates>
                <short_description>&lt;![CDATA[ The ruins of São Miguel das 
Missões
in Brazil, and those of San Ignacio Miní, Santa Ana, Nuestra Señora de
Loreto and Santa María la Mayor in Argentina, lie at the heart of a
tropical forest. They are the impressive remains of five Jesuit
missions, built in the land of the Guaranis during the 17th and 18th
centuries. Each is characterized by a specific layout and a different
state of conservation.]]&gt; </short_description>
                <site>Jesuit Missions of the Guaranis: San Ignacio Mini, Santa 
Ana,
Nuestra Señora de Loreto and Santa Maria Mayor (Argentina), Ruins of
Sao Miguel das Missoes (Brazil)</site>
                <states>Argentina,Brazil</states>
                <transboundary>1</transboundary>
                <unique_number>326</unique_number>
        </row>
        .
        .
        .
</query>

How can I filter the row nows based on the region? I want to only show
row nodes that have a region value of Latin America and the Caribbean.