var fDesc=new Array();

fDesc[1] = "listen individually to it, anytime, or play the whole composition, adjusting tempo. Useful for music beginners to learn at a personal pace. While playing the composition, notes and lyrics light at the same time music is playing.";
		
function tCollapseAll(maxID)
{
	document.getElementById("alls_action").innerHTML = "<span id=\"exp1\" onclick=\"JavaScript:tExpandAll(" + maxID + ");\">Expand descriptions</span>";
		
	var id=1;
	for (id=1; id <= maxID; id++) 
	{
		if (document.getElementById("desc_" + id))
			tShowHide(id, 2);
	}
}

function tExpandAll(maxID)
{
	document.getElementById("alls_action").innerHTML = "<span id=\"exp2\" onclick=\"JavaScript:tCollapseAll(" + maxID + ");\">Collapse descriptions</span>";

	var id=1;
	for (id=1; id <= maxID; id++) 
	{
		if (document.getElementById("more_" + id))
			tShowHide(id, 1);
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}

function tShowHide(id, show)
{
	var s = document.getElementById("more_" + id);

	if ((s.innerHTML!=fDesc[id] || show==1) && show!=2)
	{
		s.innerHTML = fDesc[id];
	}
	else
	{
		s.innerHTML = '...';
	}
}