public dynamic class @ax-actionscript-book-PodcastPlayer-com-example-programmingas3-podcastplayer-RSSBase extends EventDispatcher
      {
          // Required RSS 2.0 elements
          public var title:String;
          public var link:String;
          public var description:String;
          private var _pubDate:String;
          private var _category:Object;
  
          public var imageUrl:String; 
          private var _image:Object;
                  
          // derived values
          public var categoryArray:Array = new Array();
          public var publishDate:Date;
      
          public function set pubDate(dateStr:String):void
          {
              this._pubDate = dateStr;
              if (dateStr != null)
              {
                  this.publishDate = actionscript_book_PodcastPlayer_com_example_programmingas3_utils_DateUtil.parseRFC822(dateStr);
              }  
          }
          
          public function get pubDate():String
          {
              return _pubDate;
          } 
    
          public function get category():Object
          {
              return _category;
          }
             
          public function set category(catObj:Object):void
          {
              if (catObj != null)
              {
                  var catXml:XML = catObj as XML;
                  if (catXml != null && catXml.attributes().length() > 0)
                  {
                      var domain:String = getAttribute(catXml, "domain");
                      var cat:String = getAttribute(catXml, "text");
                      var kittens:XMLList = catXml.children();
                      for (var i:int = 0; i < kittens.length(); i++)
                      {
                          cat += " > " + getAttribute(kittens[0], "text");
                      }
                      while (kittens.length() > 0)
                      {
                          cat += " > " + getAttribute(kittens[0], "text");
                          kittens = kittens[0].children();
                      }
                      
                      this._category = cat;
                      if (this.categoryArray.length > 0)
                      {
                          this.categoryArray.push(cat);
                      }
                      else
                      {
                          this.categoryArray = [ cat ];
                      }
                  }
                  else
                  {
                      this._category = catObj.toString();
                      if (this.categoryArray.length > 0)
                      {
                          this.categoryArray.push( this._category );
                      }
                      else
                      {
                          this.categoryArray = [ this._category ];
                      }
                  }
              }       
          }
                 
          public function buildCategory(catStr:String, catObj:XML):String
          {
              var subCat:String = getAttribute(catObj, "text");
              if (subCat != null)
              {
                  catStr += " > " + subCat;
              }
              
              var kittens:XMLList = catObj.children();
              if (kittens.length() > 0)
              {
                  return buildCategory(catStr, kittens[0]);;
              }
              
              return catStr; 
          }
          
          public function get image():Object
          {
              return this._image;
          }
          
          public function set image(elementObj:Object):void
          {
              var element:XML = elementObj as XML;
              var imageObj:Object = new Object();
  
              if (element.url.length() > 0)
              {
                  imageObj.url = getElementText(element, "url");
                  imageObj.title = getElementText(element, "title");
                  imageObj.link = getElementText(element, "link");
                  imageObj.width = getElementText(element, "width");
                  imageObj.height = getElementText(element, "height");
                  imageObj.description = getElementText(element, "description");
                                  
                  this.imageUrl = imageObj.url;
                  this._image = imageObj;
              }
              else if (element.@href.length() > 0)
              {
                  this.imageUrl = getAttribute(element, "href")
                  imageObj.url = this.imageUrl;
              }
              this._image = imageObj;
          }
          
          public function set itunes_image(elementObj:Object):void
          {
              this.image = elementObj;
          }
                  
              public static function getAttribute(element:XML, attName:String):String
              {
                  var attValue:String = "";
                  var attribs:XMLList = element.attribute(attName);
                  if (attribs.length() > 0)
                  {
                      attValue = attribs[0].toString();
                  }
                  return attValue;
              }
              
              public static function getElementText(parent:XML, elemName:String):String
              {
                  var elemText:String = "";
                  var kids:XMLList = parent.child(elemName);
                  if (kids.length() > 0)
                  {
                      elemText = kids[0].toString();
                  }
                  return elemText;
              }
      }
  }