youtube linkswap

/* EMBED YOUTUBE LINKS */
if (getValue("embedYoutube") === "true"){
  $('a').each(function(i, o){
    var videoid = false;
    if ($(this).attr('href') === undefined){
      return;
    }
    if ($(this).attr('href').toLowerCase().indexOf('www.youtube.') !== -1 && $(this).attr('href').toLowerCase().indexOf('/watch?') !== -1){
      videoid = $(this).attr('href').split('?')[1]; // only params
      videoid = videoid.split('#')[0]; // discard hash
      videoid = videoid.split('&'); // split params
      videoid.forEach(function(o, i){ // find videoid
        var sp = o.split('=');
        if (sp[0] === 'v'){ // we found v=?? param, so we have our guy
          videoid = sp[1];
          return false;
        }
        return true;
      });
    } else if ($(this).attr('href').toLowerCase().indexOf('youtu.be') !== -1){
      videoid = $(this).attr('href').split('?')[0]; // only before params
      videoid = videoid.split('/');
      videoid = videoid[videoid.length - 1]; // only last url bit
    }
    if (videoid !== false){
      var embedstring;
      if (getValue("embedYoutubeNewstyle") === "true"){
        embedstring = '<br/><iframe width="640" height="360" src="http://www.youtube.com/embed/' + videoid + '" frameborder="0" allowfullscreen></iframe><br/>';
      } else {
        embedstring = '<br/><object width="640" height="360"><param name="movie" value="http://www.youtube.com/v/' + videoid + '?version=3&amp;hl=en_GB"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/' + videoid + '?version=3&amp;hl=en_GB" type="application/x-shockwave-flash" width="640" height="360" allowscriptaccess="always" allowfullscreen="true"></embed></object><br/>';
      }
      if (getValue("embedYoutubeButtons") === "true"){
        (function(that, embedstring){
          var youtubebutton = $('<button>').html('embed').css('padding', '0').click(function(){
            $(this).replaceWith(embedstring);
          });
          $(that).after(youtubebutton);
        })(this, embedstring);
      } else {
        $(this).after(embedstring);
      }
    }
  });
}