var fDesc=new Array();
fDesc[0] = "Grey Olltwit&#039;s Maths Worksheet - Subtraction is a simple application which can help to develop your kids&#039; math skills. <br /> Choose from 3 levels of subtraction sums from single digits to three figure problems. Each sum is randomly produced one at a time on a blackboard style interface. Audio and visual encouragement let&#039;s you know when you are right and when you need to try again. Includes the ability to demonstrate &quot;borrow 1&quot;. There is a facility to print out personalised certificates to encourage improvement.";

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 = '';
	}
}