function showArchive() {
	document.getElementById('video_archive').style.display = 'block';
	document.getElementById('btn_videos_more').style.display = 'none';
	document.getElementById('btn_videos_less').style.display = 'block';
}
function hideArchive() {
	document.getElementById('video_archive').style.display = 'none';
	document.getElementById('btn_videos_less').style.display = 'none';
	document.getElementById('btn_videos_more').style.display = 'block';
}