var fDesc=new Array();
fDesc[0] = "Mathelogic is a specialist in delivering technologies to classrooms. Our team members have more than 10 years of experience in developing learning and teaching technologies. Our products have help more than 10,000 teachers in thousands of schools to enhance their teaching efficiency and help students to achieve better results.";

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 = '';
	}
}