var fDesc=new Array();
fDesc[0] = "MTAC is a calculator that does more than a normal calculator. Not only will MTAC do the normal arithmetic operations as well as scientific operations, it will calculate derivatives and integrals symbolically. Is easy to install and use and is very useful for students.";

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 = '';
	}
}