docs: function(e) {
      if (!this._flagIsActive(this.FLAG_WEIGHT_CLASSES))
        return 0;
  
      var weight = 0;
  
      // Look for a special classname
      if (typeof(e.className) === 'string' && e.className !== '') {
        if (this.REGEXPS.negative.test(e.className))
          weight -= 25;
  
        if (this.REGEXPS.positive.test(e.className))
          weight += 25;
      }
  
      // Look for a special ID
      if (typeof(e.id) === 'string' && e.id !== '') {
        if (this.REGEXPS.negative.test(e.id))
          weight -= 25;
  
        if (this.REGEXPS.positive.test(e.id))
          weight += 25;
      }
  
      return weight;
    }