var fDesc=new Array();
fDesc[0] = "The Biomath calculators provide a range of functions essential to molecular biology experiments, including DNA and protein conversions, melting temperature, molarity and dilution calculations. Each calculator will open in a new window, 800 pixels wide. When finished, close the window and continue from this page.";

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