Parsing XML issues

programming flash
1

For some reason, I am unable to pull information from an XML I am download from Shopzilla. I can trace the entire xml which displays, but when trying to get to a specific node to get the specific data, it doesn’t want to retrieve at all. Any help would be greatly appreciated, below is the code of what I have so far and XML.

var loader = new URLLoader();
loader.addEventListener(Event.COMPLETE, onLoaded);
var request:URLRequest = new URLRequest("shopzilla.xml");

try
{
    loader.load(request);
    ta.appendText("xml is loaded");
}
catch(error:Error)
{
    ta.appendText("xml is not loaded");
}

var xml:XML;

function onLoaded(e:Event):void
{
    try
    {
        xml = new XML(e.target.data);
        tb.appendText (xml);
        trace(xml);
    }
    catch(e:TypeError)
    {
        tb.appendText ("error loading xml");
    }

}

<ShopzillaQueryResponse xmlns="http://publisher.shopzilla.com/pp/xml/Publisher_API_Response.xsd">
  <categoryResponse matched="0" included="2">
    <category id="15010100" parent_id="15000000" display="false">
      <name>Video Games</name>
      <URL>http://www.shopzilla.com/7S--Video_Games_-_af_assettype_id--10__af_creative_id--6__af_id--2588__af_placement_id--__cat_id--15010100__rf--af1</URL>
    </category>
    <category id="15000000" parent_id="1" display="false">
      <name>Video Games</name>
      <URL>http://www.shopzilla.com/10B--Video_Games_-_af_assettype_id--10__af_creative_id--6__af_id--2588__af_placement_id--__cat_id--15000000__rf--af1</URL>
    </category>
  </categoryResponse>
  <productResponse requested="1" matched="1" included="1" start="1">
    <product category_id="15010100" id="513218609">
      <name>Halo 3</name>
      <URL>http://www.shopzilla.com/12--Halo_3_-_af_assettype_id--10__af_creative_id--6__af_id--2588__af_placement_id--__cat_id--15010100__prod_id--513218609__rf--af1</URL>
      <imageURL_small>http://image.shopzilla.com/resize?sq=60&amp;uid=513218609</imageURL_small>
      <imageURL_med>http://image.shopzilla.com/resize?sq=100&amp;uid=513218609</imageURL_med>
      <imageURL_medlarge>http://image.shopzilla.com/resize?sq=160&amp;uid=513218609</imageURL_medlarge>
      <imageURL_large>http://image.shopzilla.com/resize?sq=400&amp;uid=513218609</imageURL_large>
      <maxRawImageSize/>
      <desc_short>Xbox 360 - Shooting - Rated M (Mature); Platform: Xbox 360</desc_short>
      <desc_long>Halo 3 is the third game in the Halo Trilogy and will provide the thrilling conclusion to the events begun in Halo: Combat Evolved. Halo 3 was first revealed at the Electronic Entertainment Expo in Los Angeles on May 6th, 2006. Halo 3 will be available for Xbox 360 in 2007. Halo 3 will pick up where Halo 2 left off. The Master Chief is returning to Earth to finish the fight. The Covenant occupation of Earth has uncovered a massive and ancient object beneath the African sands - an object who's secrets have yet to be revealed. Earth's forces are battered and beaten.</desc_long>
      <prodRating URLref="prodRate-5">5</prodRating>
      <prodScore>100.00</prodScore>
      <numReviews>1</numReviews>
      <reviewsURL>http://www.shopzilla.com/3H</reviewsURL>
      <minPrice>49.96</minPrice>
      <maxPrice>59.99</maxPrice>
      <numMerchants>8</numMerchants>
    </product>
  </productResponse>
  <otherResponse>
    <totalProducts>23030513</totalProducts>
    <totalStores>98687</totalStores>
    <imageURL>
      <URL id="prodRate-5">http://img.bizrate.com/site/rating_5_star_80x13.gif</URL>
    </imageURL>
    <trackingPixel>http://adserve.shopzilla.com/img/publisherID-2588/assetID-6/placementID-/categoryID-1/productID-513218609</trackingPixel>
  </otherResponse>
</ShopzillaQueryResponse>

So as an example, when trying to get the URL in <imageURL_med>, nothing comes up (or any node). Displaying the whole XML displays fine in TextBox tb, but not when narrowing it down.

Thanks,

Corey