code: function(node) {
      node.readability = {"contentScore": 0};
  
      switch (node.tagName) {
        case 'DIV':
          node.readability.contentScore += 5;
          break;
  
        case 'PRE':
        case 'TD':
        case 'BLOCKQUOTE':
          node.readability.contentScore += 3;
          break;
  
        case 'ADDRESS':
        case 'OL':
        case 'UL':
        case 'DL':
        case 'DD':
        case 'DT':
        case 'LI':
        case 'FORM':
          node.readability.contentScore -= 3;
          break;
  
        case 'H1':
        case 'H2':
        case 'H3':
        case 'H4':
        case 'H5':
        case 'H6':
        case 'TH':
          node.readability.contentScore -= 5;
          break;
      }
  
      node.readability.contentScore += this._getClassWeight(node);
    }
docs: Initialize a node with the readability object. Also checks the
  className/id for special names to add to its score.
  
  @param Element
  @return void