var fDesc=new Array();
fDesc[0] = "Olive Tree Lab - Barrier Calculator is a free tool used for calculating the effects of infinite thin barriers from a source to a receiver. The application uses the Hadden – Pierce diffraction model to calculate the Insertion Loss and Excess Attenuation for a barrier. The calculations are done from 1Hz to 10,000Hz with a step of 10Hz.";

function tShowHide(id, show)
{
	var s = document.getElementById("desc");

	if ((s.innerHTML.length<=212 || show==1) && show!=2)
	{
		s.innerHTML = fDesc[id];
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			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 = '';
	}
}