var fDesc=new Array();
fDesc[0] = "Nautical Calculator provides a set of functions for those learning marine navigation or want to reduce the amount of pencil and paper math and increase reliability and accuracy of their calculations when planning a voyage. Simply enter your deduced reckoning (DR) position and your actual position and let Nautical Calculator compute the set and drift.";

function tShowHide(id, show)
{
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	{
		s.innerHTML = fDesc[id];
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		if (document.getElementById('m2'))
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}