var fDesc=new Array();
fDesc[0] = "Energy Forms and Changes is an interactive application that helps students understand the concepts of energy forms, conservation of energy, etc. In this program, you can see two burners/coolers, a beaker of water, block of iron and brick, and three thermometers. You can combine them in any manner that you want and see the transfer of heat energy from one object to another.";

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 = '';
	}
}