var fDesc=new Array();
fDesc[0] = "TeachSpin Simulation is a special program designed to visualize electromagnetic waves. Objects which do not touch each other somehow “magically” exert an influence over other objects. It is as if some invisible presence surrounds these objects, linking them to other objects in ways that we cannot perceive with our normal senses.";

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 = '';
	}
}