anchor.diff:  library LibraryList;
  +import "dart:async";
   import "dart:convert";
   import "dart:html";
   import "package:polymer/polymer.dart";
  
positive.code:       titleDiv.text = "$artist - $album";
      }
      
      HttpRequest.request(requestStr)
        .then((HttpRequest request) {
          List songs = JSON.decode(request.responseText);
          createSongTable(songs);
          songsTable.style.display = "block";
  
negative.code:     songsTable = $["songs"];
      tableBody = songsTable.tBodies[0];
      
      // Get all of our elements
      UListElement viewsList = $["viewsList"];
      artistsButton = viewsList.children[0];
      albumsButton = viewsList.children[1];
      songsButton = viewsList.children[2];
      dataList = $["data"];
      titleDiv = $["title"];
  
      // Hide the song table and title div
      songsTable.style.display = "none";
      titleDiv.style.display = "none";
      
      // Fill our artist page.
      getAllArtists();
      setupEvents();
    }
  