var fDesc=new Array();
fDesc[0] = "SPM9613 is a program designed for analyzing community noise and sound propagation emitted from a variety of noise sources. The program features automatic breakdown of large 3-D or line sources into multiple point sources, graphical capability to assure correct user inputs and 3-D Ground Elevation plots.";

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

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	{
		s.innerHTML = fDesc[id];
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	else
	{
		s.innerHTML = '';
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}