var fDesc=new Array();
fDesc[0] = "This program develop ten real-world applications of physics and math for kids aged 9 to 17. The applications are: LEVERS, PENDULUM (studies basic oscillations ), WATER WHEEL, MOON LANDER, WEATHER WATCH, CIRCUITS, ROBOTICS, TRAJECTORIES (simulation of a flying object ), ROCKETRY, PROBABILITY ( introduces an exciting field of mathematics with problems ).";

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 = '';
	}
}