function play_audio(id) {
	var player_url = "audio/player.php?id="+id;
	window.open(player_url, "audio_player", "width=413,height=200");
}
function play_video(id) {
	var player_url = "video/player.php?id="+id;
	window.open(player_url, "video_player", "width=390,height=413");
}