var lastLyricId = 0;

function getLyric(lyricId)
{
	if (lastLyricId > 0)
	{
		document.getElementById('lyric' + lastLyricId).style.display = 'none';
	}

	if (lastLyricId == lyricId)
	{
		document.getElementById('lyric' + lyricId).style.display = 'none';
		lastLyricId = 0;
		return;
	}

	lastLyricId = lyricId;
	document.getElementById('lyric' + lyricId).style.display = 'block';
} // end func getLyric()