jQuery.fn.extend( {
   feed:function ( settings )
   {
      settings = jQuery.extend( {}, jQuery.fn.feed.settings, settings );

      var self = this;
      if( settings.url )
      {
         $.ajax( {
            type:"GET",
            url:settings.url,
            dataType:"xml",
            success:function ( data )
            {
               self.each( function ()
               {
                  if( $( "feed", data ).length == 1 )
                  {
                     var feed = new AtomFeed( data );
                  }
                  else if( $( "channel", data ).length == 1 )
                  {
                     var feed = new RSSFeed( data );
                  }

                  if( feed && jQuery.isFunction( settings.success ) )
                  {
                     settings.success( this, feed, settings );
                  }
               } );
            }
         } );
      }

      function FeedItem()
      {
         this.title = "";
         this.link = "";
         this.description = "";
         this.updated = "";
         this.id = "";
      }

      function Feed( data )
      {
         this.items = new Array();
         this.title = $( data ).find( "title:first" ).text();
         this.link = $( data ).find( "link:first" ).text();
      }

      function RSSFeed( data )
      {
         this.constructor( data );
         this.description = $( data ).find( "description:first" ).text();
         this.updated = $( data ).find( "lastBuildDate:first" ).text() ? $( data ).find( "lastBuildDate:first" ).text() : $( data ).find( "pubDate:first" ).text();

         var feed = this;
         $( "item", data ).each( function ()
         {
            var item = new FeedItem();

            item.title = $( this ).find( "title" ).eq( 0 ).text();
            item.link = $( this ).find( "link" ).eq( 0 ).text();
            item.description = $( this ).find( "description" ).eq( 0 ).text();
            item.updated = $( this ).find( "pubDate" ).eq( 0 ).text() ? $( this ).find( "pubDate" ).eq( 0 ).text() : feed.updated;

            feed.items.push( item );
         } );
      }

      RSSFeed.prototype = new Feed();

      function AtomFeed( data )
      {
         this.constructor( data );
         this.description = $( channel ).find( "subtitle:first" ).text();
         this.updated = $( channel ).find( "updated:first" ).text();

         var feed = this;
         $( "entry", data ).each( function ()
         {
            var item = new FeedItem();

            item.title = $( this ).find( "title" ).eq( 0 ).text();
            item.link = $( this ).find( "link" ).eq( 0 ).text();
            item.description = $( this ).find( "content" ).eq( 0 ).text();
            item.updated = $( this ).find( "updated" ).eq( 0 ).text() ? $( this ).find( "updated" ).eq( 0 ).text() : feed.updated;

            feed.items.push( item );
         } );
      }

      AtomFeed.prototype = new Feed();
   }
} );


/**
 * Default settings.
 * Already implements a cycle through all feed-items on success.
 */
jQuery.fn.feed.settings = {

   url:null,
   timeout:10000,

   success:function ( target, feed, settings )
   {
      var index = 0;
      var mouseover = 0;

      function cycleItems()
      {
         if( mouseover )
         {
            var timeout = 1000;
         }
         else
         {
            var timeout = settings.timeout;

            if( ++index >= feed.items.length )
            {
               index = 0;
            }

            $( target ).fadeOut( 500, function ()
            {
               $( target ).html( settings.getItemHTML( feed, index ) ).fadeIn( 500 )
            } );
         }

         setTimeout( cycleItems, timeout );
      }

      $( target ).mouseenter( function ()
      {
         mouseover = 1
      } );
      $( target ).mouseleave( function ()
      {
         mouseover = 0
      } );
      cycleItems();
   },

   getItemHTML:function ( feed, index )
   {
      var html = "";
      var date = new Date( feed.items[index].updated );

      html += "<div><a href='" + feed.items[index].link + "' target='_blank'>" + feed.items[index].title + "</a></div>";
      html += !isNaN( date ) ? "<div style='font-size:10px'>" + date.toLocaleString() + "</div>" : "";
      html += "<div>" + feed.items[index].description + "</div>";

      return html;
   }

};