var fDesc=new Array();
fDesc[0] = "Grid Algebra is a new visual and kinaesthetic way to learn number concepts and pre-algebra at KS2 and to learn about number and algebra for KS3 and KS4. What is more, it supports more developed algebra ideas as <br /> <br /> features:<br /> - mental arithmetic and practising multiplication tables<br /> - multiples, factors, negative numbers<br /> - expressing formal ways of representing arithmetic<br /> - finding equivalent expressions<br /> - using a letter to represent a number and creating algebraic expressions<br /> - expanding brackets, factorising, substituting, simplifying expressions and solving equations through taking inverse journeys around the grid<br /> - plus much more!";

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

	if ((s.innerHTML.length<=212 || show==1) && show!=2)
	{
		s.innerHTML = fDesc[id];
		if (document.getElementById('m1'))
			document.getElementById('m1').style.display='none';
		if (document.getElementById('m2'))
			document.getElementById('m2').style.display='none';
		if (document.getElementById('more_txt'))
			document.getElementById('more_txt').style.display='inline';
	}
	else
	{
		s.innerHTML = '';
	}
}