title: iTunes search API undefined first result
body: <p>Hi I'm struggling for a long time with the itunes api album listing.</p>
  
  <p>My issue is the thumbnail and album title in the first <code>&lt;li&gt;&lt;/li&gt;</code> always comes back as undefined.</p>
  
  <p>The code is based on itunes artist search which works as intended, but my version for album listing always gives this glitch.</p>
  
  <pre><code>$(document).ready(function(){
    var searchTerm = '909253';
    $.getJSON( "http://itunes.apple.com/lookup?id=" + searchTerm + '&amp;limit=30' + '&amp;entity=album' + '&amp;callback=?', function(data) {
      $.each(data.results, function() {
        $('&lt;li&gt;&lt;/li&gt;')
          .hide()
          .append('&lt;img src="' + this.artworkUrl60 + '" /&gt;' ) 
          .append('&lt;span&gt;&lt;a href="http://itunes.apple.com/search?term=' 
            + this.artistName + '"&gt;' + 'Artist: ' + this.artistName
            + '&lt;/a&gt; ' + '&lt;br /&gt;Album Title: '  + this.collectionName + '&lt;/span&gt;')
          .appendTo('#results')
          .fadeIn();
      });        
      $("#results").listview("refresh");
    });
  });    
  </code></pre>
  
  <p>​
  See <a href="http://jsfiddle.net/tris_wood/u2sYe/2/" rel="nofollow">http://jsfiddle.net/tris_wood/u2sYe/2/</a></p>
  
  <p>I've seen similar posts with this issue wth the itunes api but no solutions that I could find.</p>
  
  <p>Any help would be greatly appreciated.</p>