window.youtube={};
window.youtube.alreadyLoaded=false;
window.youtube.alreadyAdded=false;
window.youtube.addPlaylist = function(videoLink,playlistLink,title,number){
   var list = document.createElement('li');
    list.className='playlist-bar-item yt-uix-slider-slide-unit yt-tile-visible userPlaylistLi';
    list.innerHTML='<div class="userPlaylist"><a href="/watch?v='+videoLink+'&list='+playlistLink+'" class="playlist-thumb-section yt-uix-sessionlink" title="'+title+'"><span class="video-thumb ux-thumb yt-thumb-default-106 "> <span class="yt-thumb-clip">   <span class="yt-thumb-clip-inner"><img src="//i2.ytimg.com/vi/'+videoLink+'/default.jpg" alt="" width="106"><span class="vertical-align"></span>   </span> </span></span><img class="playlist-bar-playlist-item-icon hid" src="//s.ytimg.com/yt/img/pixel-vfl3z5WfW.gif"><span class="screen hid"> <span class="play-all">   <img src="//s.ytimg.com/yt/img/pixel-vfl3z5WfW.gif" class="play-arrow">   Play all </span></span>  </a>  <a class="playlist-data-section" href="/playlist?list='+playlistLink+'"><span dir="ltr" class="playlist-data-item list-title yt-uix-slider-title" title="'+title+'"> '+title+' <span class="list-video-count">('+number+')</span></span><span class="list-video-facets">'+number+' videos  <span class="view-list">View all</span>   </a><div class="userPlaylistsMenu"><span onclick="window.youtube.moveList(\''+playlistLink+'\',-1)" title="Move left"><</span> <span title="Delete this playlist" onclick="window.youtube.deleteList(\''+playlistLink+'\')">X</span> <span onclick="window.youtube.moveList(\''+playlistLink+'\',+1)" title="Move right">></span></div></div>';
    document.getElementById('playlist-bar-lists-content').appendChild(list);
};
window.youtube.addPlaylistFromPage = function(){
   if(window.youtube.alreadyAdded==false){
    window.youtube.alreadyAdded=true;
    var videoLink = document.querySelector('.playlist-video-item a').href;
     videoLink = videoLink.substring(videoLink.search('watch')+8);
     videoLink = videoLink.substring(0,videoLink.search('&'));
    var playlistLink = window.location.href.substring(window.location.href.search(/\?list/)+6);
     playlistLink = playlistLink.substring(0,playlistLink.search('&'));
    var title = document.getElementsByTagName('title')[0].innerHTML.substring(0,document.getElementsByTagName('title')[0].innerHTML.search(' - YouTube')).replace(/[\n\r]/g,'');
    var number = document.querySelector('.stat-value').innerHTML*1;
     if(document.querySelector('#playlist-bar-lists-content')){
      window.youtube.addPlaylist(videoLink,playlistLink,title,number)
     }
     else{
     var clickIt = document.getElementById('masthead-user-button');
     var click = document.createEvent('MouseEvent');   
     click.initMouseEvent('click', true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 1, null);     
     clickIt.dispatchEvent(click);};
     if(typeof window.localStorage.ytpl=='undefined') {window.localStorage.ytpl = videoLink+'|'+playlistLink+'|'+title+'|'+number} else {window.localStorage.ytpl = window.localStorage.ytpl+';'+videoLink+'|'+playlistLink+'|'+title+'|'+number};
   }
};
window.youtube.readPlaylists = function(){
   if(typeof window.localStorage.ytpl!='undefined'){
    var aCur = window.localStorage.ytpl.split(';');
    var aLists = [];
    var l = document.location.href.split('list=');
    if(typeof l[1]!='undefined')
     l=l[1].split('&')[0];
    for(i=0;i<aCur.length;i++){
     aLists[i]=aCur[i].split('|');
     if(typeof l[1]!='undefined'){
      if(l==aLists[i][1])
       window.youtube.alreadyAdded=true;
     }
     if(typeof aLists[i][1] != 'undefined')
      window.youtube.addPlaylist(aLists[i][0],aLists[i][1],aLists[i][2],aLists[i][3])
    }
   }
}
window.youtube.addButton = function(){
   var button = document.createElement('button');
   button.className = 'playlist-share yt-uix-button yt-uix-button-default yt-uix-tooltip';
   button.onclick = function(){window.youtube.addPlaylistFromPage()};
   button.innerHTML = '<span class="yt-uix-button-content">Save </span>';
   document.getElementById('playlist-action-buttons').appendChild(button);
};

window.youtube.moveList = function(list,w){
   var a = window.localStorage.ytpl.split(';');
   var n=[];
   for(i=0;i<a.length;i++){n[i]=a[i].split('|')};
   for(i=0;i<a.length;i++){
    if(list==n[i][1]){
     if(typeof n[i+w] != 'undefined'){
      var thislist=n[i];
      var anotherlist=n[i+w];
      n[i]=anotherlist;
      n[i+w]=thislist;
      var t=n[0][0]+'|'+n[0][1]+'|'+n[0][2]+'|'+n[0][3];
      for(k=1;k<n.length;k++){
       t = t+';'+n[k][0]+'|'+n[k][1]+'|'+n[k][2]+'|'+n[k][3];
      };
      window.localStorage.ytpl = t;
      window.youtube.reloadLists();
      break
     }
    }
   }
};
window.youtube.deleteList = function(list){
   var a = window.localStorage.ytpl.split(';');
   var n=[];
   for(i=0;i<a.length;i++){n[i]=a[i].split('|')};
   if(a.length>1){
    for(i=0;i<a.length;i++){
     if(list==n[i][1]){
      if(i>0){
       var t = n[0][0]+'|'+n[0][1]+'|'+n[0][2]+'|'+n[0][3];
       for(k=1;k<i;k++){
        t = t+';'+n[k][0]+'|'+n[k][1]+'|'+n[k][2]+'|'+n[k][3];
       };
       for(k=i;k<n.length-1;k++){
        t = t+';'+n[k+1][0]+'|'+n[k+1][1]+'|'+n[k+1][2]+'|'+n[k+1][3];
       }
      }
      else{
       for(k=i;k<n.length-1;k++){
       if(k==0)
        var t = n[k+1][0]+'|'+n[k+1][1]+'|'+n[k+1][2]+'|'+n[k+1][3]
       else
        t = t+';'+n[k+1][0]+'|'+n[k+1][1]+'|'+n[k+1][2]+'|'+n[k+1][3];
       }
      }
      window.localStorage.ytpl = t;
      window.youtube.reloadLists();
      break
     }    
    }
   }
   else
   {
    window.youtube.removePlaylists()
   }
};
window.youtube.removePlaylists = function(){
window.localStorage.removeItem('ytpl');
window.youtube.reloadLists();
};
window.youtube.reloadLists = function(){
   for(i=0;i<document.querySelectorAll('.userPlaylistLi').length;i++){
    document.querySelectorAll('.userPlaylistLi')[i].style.display='none'
   };
   window.youtube.readPlaylists()   
};
if(document.getElementById('playlist-action-buttons')){
   if(typeof window.localStorage.ytpl!='undefined'){
    var a = window.localStorage.ytpl.split(';');
    var n=[];
    var l = document.location.href.split('list=')[1];
     l=l.split('&')[0];
    for(i=0;i<a.length;i++){
     n[i]=a[i].split('|');
     if(l==n[i][1])
      window.youtube.alreadyAdded=true;
    }   
   };   
     
if(window.youtube.alreadyAdded==false){window.youtube.addButton()};};

document.getElementById('masthead-user-button').onclick=function(){
   if(window.youtube.alreadyLoaded==false){
    window.youtube.alreadyLoaded=true;
    var someint= setInterval(function(){
     if(document.querySelector('#playlist-bar-lists-content')){
      clearInterval(someint);
      window.youtube.readPlaylists()
     }
    },100)
   }
};

.userPlaylistsMenu {
height: 20px;
left: 45px;
padding: 5px 0px 0px 35px;
position: absolute;
top: 106px;
width: 60px;
z-index: 2;
}
.userPlaylistsMenu span {cursor:pointer;}
.userPlaylist {display:inline-block;position:relative;}