";
$('#fold_area'+num).hide().html(html).slideDown();
} else {
$('#fold_area'+num).hide().html("");
var videoId = url.split(/\//g)[3];
var html = "";
$('#fold_area'+num).html(html);
play_youtube('ytplaer'+num, videoId);
$('#fold_area'+num).slideDown();
}
}
// Load the IFrame Player API code asynchronously.
var tag = document.createElement('script');
tag.src = "https://www.youtube.com/player_api";
var firstScriptTag = document.getElementsByTagName('script')[0];
firstScriptTag.parentNode.insertBefore(tag, firstScriptTag);
// Replace the 'ytplayer' element with an