var fDesc=new Array();
fDesc[0] = "LRFD Box Culvert is a Mathcad 15 program that allows you to design concrete box culverts, wingwalls, headwalls, and cutoff walls in accordance with the AASHTO LRFD Bridge Specification. Mathcad enables engineers to easily perform, document and share calculation and design results.";

function tShowHide(id, show)
{
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	{
		s.innerHTML = fDesc[id];
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			document.getElementById('m2').style.display='none';
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			document.getElementById('more_txt').style.display='inline';
	}
	else
	{
		s.innerHTML = '';
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}