jQuery.fn.youtube=function(data)
{
    var config={
                  type              : null,          // allowed values: 'playlist', 'search','user'
		          keyword           : null,          //A search query term. Searches for the specified string in all video metadata, such as titles, tags, and descriptions.
		          url               : null,
                  users             : null,          // videos uploaded by a user
		          alt               : null,          //The format of feed to return, such as atom (the default), rss, or json.
                  orderby           : null,          //The order in which to list entries, such as relevance (the default for the videos feed) or viewCount.
                  start_index       : null,          //The 1-based index of the first result to be retrieved (for paging). 
	              max_results       : 10,			 //The maximum number of entries to return at one time
	              categories        : null,          //The categories and/or tags to use in filtering the feed results. 
		                                             //  For example, feedURL/-/fritz/laurie returns all entries 
									                 // that are tagged with both of the user-defined tags fritz and laurie.
		
                  format            : null,          //A specific video format. For example, format=1 restricts search results to videos for mobile devices.		
		          most_viewed       : null,
		          top_rated         : null,
		          recently_featured : null,
		          top_favorites     : null,
		          most_discussed    : null,
		          most_linked       : null,
		          most_responded    : null,
		   
		          recently_featured : null,
		          playlist_id       : null,          //playlists feed contains a list of public playlists defined by a user.
		          div               : this,
		          
		          cleanReturn       : 1,             //do you want a full youtube return, or just an image list
		          inlineVideo       : 1,             //do you want to redirect to youtube, or play inlinevideo
		          callback          : null,
                  api_key           : null,
                  blockUI           : true           // boolean, if true requires jquery.litebox.js
	            };//end of config
		 
		if(data) 
		{
		   $.extend(config, data);
		}
		
		/**/
		return this.each(function()
			{
				$('#youtubelist').remove();
				$(this).append('<ul id="#youtubelist">');
				
				var url=$.youtube.getURL(config);
				$.youtube.request(url);
			}
		);//end of each 
}
/*end of youtube function*/
	
/** 
 *extend the youtube function
 */

$.youtube= 
{
	config   :{},
	
	/**
	  * genereate the url 
	  * according to the configuration
	  *
	  */
	
	getURL: function(config)
	{
	    var url='';
		this.config=config;
		config.type=config.type;
		
		if( (config.type =='search') || (config.type=='tag') || (config.type=='title') || (config.type =='description') )
		{
		    config.type='search';
		}
			
        if (config.url) return config.url;
        if (!config.callback) config.callback='jQuery.youtube.response';
		
		var url='http://gdata.youtube.com/feeds/';
		
		switch (config.type){
			case 'users':    url +='users/'+config.keyword+'/uploads?alt=json-in-script&callback='+config.callback;
			                 break;
			    
            case 'search':   url  +='videos?alt=json-in-script&callback='+config.callback;
				             url  += '&vq='+config.keyword;   
			                 break;
			              
			case 'playlist': url +='playlists/'+config.keyword;
			                 break;
			                 
			case 'category': break;
			                 
            default        : url ='http://gdata.youtube.com/feeds/videos';
				
        }
        
		if (config.start_index) 
		{
		   url +='&start-index='+ config.start_index;
		}
		
		
		if (config.max_results) 
		{
		    url +='&max-results='+ config.max_results;
		}
	   return url;
	},
	
	/* 
	*request the url in the head and get the jsondata
	*@param url string
	*@return null,
	*/
	request: function(url)
	{
		var script =document.createElement('script');
        script.type='text/javascript';
        script.src =url;
        
        document.documentElement.firstChild.appendChild(script); //add into <head>
		
		//$("head").append(script);
		//$>getjson ()url,jsondata);
    },
	
	/**
	* this function process the jsondata
	* and display into the div 
	*@param jsonData jsondata
	*/
	response : function (jsonData)
	{
		var inlineVideo=this.config.inlineVideo
        
        if(jsonData.feed.entry)
        {
	         var html='';
		     $.each( jsonData.feed.entry, function(i, item) 
		           { 
		                for( var k=0; k <item.link.length; k++ ) 
			              {
				               if( item.link[k].rel == 'alternate' ) 
				                {
				      	          url=item.link[k].href;
				       	          break;
				                }
			              }
			              
			              var thumb=item.media$group.media$thumbnail[1].url;
                          
                          if (inlineVideo)
                          {
			                  var videoId =$.youtube.getVideoId(url);
			                  html        += '<a href="javascript:$.youtube.playVideo(\''+videoId+'\');"><img src="'+thumb+'"  id="youtubethumb" alt="'+item.title.$t+'"></a>';
			              }
			              else 
			              {   			
			                  html        += '<a href="'+url+'"><img src="'+thumb+'" id="youtubethumb" alt="'+item.title.$t+'"></a>';
			              }
		           }
		     );
		     
		     $(this.config.div).html(html);
		     //'<a href="javascript:videoOverlay(\''+getVideoId(url)+'\');"><img src="'+thumb+'" id="youtubethumb" alt="'+entry.title.$t+'"  onmouseout="clearTimeout(timer)" onmouseover="mousOverImage(this,\''+getVideoId(url)+'\',2)"></a>';
		     //var thumb=entry['media$group']['media$thumbnail'][1].url;
	    }	  
	},
	
    /** 
     * @param url 
     * @return video id   
     */	
	getVideoId: function (url)
	{
	   var arrayURL= url.split("=");
	   if (arrayURL)
	    {
		   return arrayURL[1];
		}
	},
	
	/** 
	 * Play the video in bolockUI  
	 *
	 *@param id videoid
	 */
	playVideo : function (id)
    {
		var html ='';
		html     += '<div id="youtubecontent">';

		if (this.config.blockUI)
		{
		   html += '<div id="fermer"><a href="javascript:$.youtube.stopVideo()" id="close">Fermer</a></div>';
		}

		html += '<object type="application/x-shockwave-flash" class="youtubeplayer" data="http://www.youtube.com/v/'+id+'&autoplay=1">';
		html += '   <param name="autoplay" value="1">';
		html += '   <param name="movie" value="http://www.youtube.com/v/'+id+'" />';
		html += '   <div id="messagevideo"><h5><img src="images/alerte.gif" width="16" height="16" alt="Alerte" />';
		html += '   &nbsp;&nbsp;&nbsp;&nbsp;Cette vidéo nécessite le lecteur Flash</h5><br />';
		html += '   <p>Pour la voir, vous avez besoin de la dernière version d\'Adobe Flash Player.</p>';
		html += '   <p><a href="http://www.adobe.com/go/getflashplayer/" target="_blank">Téléchargez Flash Player gratuit maintenant!</a></p>';
		html += '   <a href="http://www.adobe.com/go/getflashplayer/" target="_blank">';
		html += '   <div align="center"><img src="http://www.adobe.com/images/shared/download_buttons/get_flash_player.gif"';
		html += '   alt="Get Adobe Flash Player" width="88" height="31" border="0" /></div></a></div>';
		html += '</object>';
		html += '</div>';
	   if (this.config.blockUI)
	   {
			$.blockUI(html); 
		}
	},
    /** 
      *unblock the UI
      */
    stopVideo : function ()
    {
	   if (this.config.blockUI)
	   {
	       $.unblockUI();
	   }
	}
};