var playerRef = null;

	function ShowAudioPlayer(filename, filetitle)
	{
		if (playerRef != null)
		{
			playerRef.close();
		}
		var windowleft = (screen.width / 2) - (400 / 2);
		var windowtop = (screen.height / 2) - (150 / 2);
		playerRef = window.open('audio.aspx?filename='+filename+'&filetitle='+filetitle,'audio_player','left='+windowleft+',top='+windowtop+',width=400,height=150,toolbar=0,location=0,directories=0,status=1,menubar=0,scrollbars=0,resizeable=0');
		playerRef.focus()
	}
	
	function ShowVideoPlayer(filename, filetitle)
	{
		if (playerRef != null)
		{
			playerRef.close();
		}
		if (filename != '')
		{
			var windowleft = (screen.width / 2) - (400 / 2);
			var windowtop = (screen.height / 2) - (400 / 2);
			playerRef = window.open('video.aspx?filename='+filename+'&filetitle='+filetitle,'video_player','left='+windowleft+',top='+		windowtop+',width=400,height=400,toolbar=0,location=0,directories=0,status=1,menubar=0,scrollbars=0,resizeable=0');
			playerRef.focus()
		}
	}