function onPlayerError(errorCode) {
        alert("An error occured of type:" + errorCode);
      }
 
function onYouTubePlayerReady(playerId) {
        ytplayer = document.getElementById("player");
        ytplayer.addEventListener("onError", "onPlayerError");
      }

function playVideo(vid){
	
	ytplayer.loadVideoById(vid);
}

function HDPlayer() {
        resizePlayer(592, 333);
      }
 
function HQPlayer() {
        resizePlayer(444, 333);
      }
 
function resizePlayer(width, height) {
        var playerObj = document.getElementById("player");
        playerObj.height = height;
        playerObj.width = width;
      }


var imname;
var timer;
 
function mousOverImage(name,id,nr){
	if(name)
		imname = name;
	imname.src = "http://img.youtube.com/vi/"+id+"/"+nr+".jpg";
	imname.style.border = 	'2px solid #4B6AA8';
	nr++;
	if(nr > 3)
		nr = 1;
	timer =  setTimeout("mousOverImage(false,'"+id+"',"+nr+");",1000);
 
}
 
function mouseOutImage(name){
 
	if(name)
		imname = name;
	//make border back to greyish
	imname.style.border = 	'2px solid #fff';
	if(timer)
		clearTimeout(timer);
 
}

var ytvb = {};

ytvb.MAX_RESULTS_LIST = 10;

ytvb.VIDEO_LIST_CSS_CLASS = 'videos2';

ytvb.PREVIOUS_PAGE_BUTTON = 'previousPageButton';

ytvb.NEXT_PAGE_BUTTON = 'nextPageButton';


ytvb.STANDARD_FEED_URL_TOP_RATED = 
    'http://gdata.youtube.com/feeds/api/standardfeeds/top_rated?';

ytvb.STANDARD_FEED_URL_MOST_VIEWED = 
    'http://gdata.youtube.com/feeds/api/standardfeeds/most_viewed?';

ytvb.STANDARD_FEED_URL_MOST_POPULAR = 
    'http://gdata.youtube.com/feeds/api/standardfeeds/most_popular?';

ytvb.STANDARD_FEED_URL_RECENTLY_FEATURED = 
    'http://gdata.youtube.com/feeds/api/standardfeeds/recently_featured?';

ytvb.CHANNEL_FEED_URL = 
    'http://gdata.youtube.com/feeds/api';

ytvb.VIDEO_FEED_URL = 
    'http://gdata.youtube.com/feeds/api/videos?';



ytvb.QUERY_URL_MAP = {
  'top_rated' : ytvb.STANDARD_FEED_URL_TOP_RATED,
 
  'most_viewed' : ytvb.STANDARD_FEED_URL_MOST_VIEWED,
 
  'most_popular' : ytvb.STANDARD_FEED_URL_MOST_POPULAR,
  
  'recently_featured' : ytvb.STANDARD_FEED_URL_RECENTLY_FEATURED,
  
  'channel' : ytvb.CHANNEL_FEED_URL,
  
  'search' : ytvb.VIDEO_FEED_URL
};


ytvb.nextPage = 2;

ytvb.previousPage = 0;

ytvb.previousSearchTerm = '';

ytvb.previousQueryType = 'search';


ytvb.jsonFeed_ = null;

ytvb.appendScriptTag = function(scriptSrc, scriptId, scriptCallback) {
 
  var oldScriptTag = document.getElementById(scriptId);
  if (oldScriptTag) {
    oldScriptTag.parentNode.removeChild(oldScriptTag);
  }
  
  var script = document.createElement('script');
  script.setAttribute('src', 
      scriptSrc + '&v=2&alt=jsonc&callback=' + scriptCallback);
  script.setAttribute('id', scriptId);
  script.setAttribute('type', 'text/javascript');
  document.getElementsByTagName('head')[0].appendChild(script);
};

ytvb.listVideos = function(queryType, searchTerm, page) {
  ytvb.previousSearchTerm = searchTerm; 
  ytvb.previousQueryType = queryType; 
  var queryUrl = ytvb.QUERY_URL_MAP[queryType];
  if (queryUrl) {
    queryUrl += 'max-results=' + ytvb.MAX_RESULTS_LIST +
        '&format=5&start-index=' + (((page - 1) * ytvb.MAX_RESULTS_LIST) + 1);
    if (searchTerm != '') {
      queryUrl += '&q=' + encodeURI(searchTerm);
    }
    ytvb.appendScriptTag(queryUrl, 
                         'searchResultsVideoListScript', 
                         'ytvb.listVideosCallback');
    ytvb.updateNavigation(page);
	
  } else {
    alert('Unknown feed type specified');
  }
};

ytvb.PresentVideos = function(queryType, searchTerm, page) {
  ytvb.previousSearchTerm = searchTerm; 
  ytvb.previousQueryType = queryType; 
  var queryUrl = ytvb.QUERY_URL_MAP[queryType];
  if (queryUrl) {
    queryUrl += 'max-results=' + ytvb.MAX_RESULTS_LIST +
        '&format=5&start-index=' + (((page - 1) * ytvb.MAX_RESULTS_LIST) + 1);
    if (searchTerm != '') {
      queryUrl += '&q=' + encodeURI(searchTerm);
    }
    ytvb.appendScriptTag(queryUrl, 
                         'searchResultsVideoListScript', 
                         'ytvb.listVideosCall');
    ytvb.updateNavigation(page);
	
   }
};

ytvb.listVideosCall = function(json) {
 
  ytvb.jsonFeed_ = eval(json.data);
  var div = document.getElementById(ytvb.VIDEO_LIST_CSS_CLASS);
  var items = json.data.items || [];
  var html = ['<dl class="videos">'];
  for (var i = 0; i < items.length; i++) {
    var title = json.data.items[i].title;
    var thumbnailUrl = json.data.items[i].thumbnail.sqDefault;
    var vid = json.data.items[i].id;
    html.push('<dt><a href="javascript:playVideo(\''+vid+'\')">');
	html.push('<img src="',thumbnailUrl,'" width="116" height="87" onmouseout="mouseOutImage(this)" onmouseover="mousOverImage(this,\'',vid,'\',1)"></a>');
	html.push('<br/>', title.substr(0,45), '</dt>');}
    html.push('</dl><br style="clear: left;"/>');
    document.getElementById(ytvb.VIDEO_LIST_CSS_CLASS).innerHTML = html.join('');
  
  if (items.length > 0) {
    loadVideo(json.data.items[0].id);
  }

};

function loadVideo(vid) {
  swfobject.embedSWF("http://www.youtube.com/v/" + vid + "?version=3&enablejsapi=1&playerapiid=ytplayer&fs=1&autohide=1",
  'player', '592', '333', '9.0.0', false, false, {allowScriptAccess: 'always',allowfullscreen: 'true'});
 
  }
ytvb.listVideosCallback = function(json) {
 ytvb.jsonFeed_ = eval(json.data);
  var div = document.getElementById(ytvb.VIDEO_LIST_CSS_CLASS);
  while (div.childNodes.length >= 1) {
    div.removeChild(div.firstChild);
    }

  var items = json.data.items || [];
  var html = ['<dl class="videos">'];
  for (var i = 0; i < items.length; i++) {
    var title = json.data.items[i].title;
    var thumbnailUrl = json.data.items[i].thumbnail.sqDefault;
    var vid = json.data.items[i].id;
    html.push('<dt><a href="javascript:playVideo(\''+vid+'\')">');
	html.push('<img src="',thumbnailUrl,'" width="116" height="87" onmouseout="mouseOutImage(this)" onmouseover="mousOverImage(this,\'',vid,'\',1)"></a>');
	html.push('<br/>', title.substr(0,45), '</dt>');}
    html.push('</dl><br style="clear: left;"/>');
    document.getElementById(ytvb.VIDEO_LIST_CSS_CLASS).innerHTML = html.join('');
};
 
ytvb.updateNavigation = function(page) {
  ytvb.nextPage = page + 1;
  ytvb.previousPage = page - 1;
  document.getElementById(ytvb.NEXT_PAGE_BUTTON).style.display = 'inline';
  document.getElementById(ytvb.PREVIOUS_PAGE_BUTTON).style.display = 'inline';
  if (ytvb.previousPage < 1) {
    document.getElementById(ytvb.PREVIOUS_PAGE_BUTTON).disabled = true;
  } else {
    document.getElementById(ytvb.PREVIOUS_PAGE_BUTTON).disabled = false;
  }
  document.getElementById(ytvb.NEXT_PAGE_BUTTON).disabled = false;
};