var fDesc=new Array();
fDesc[0] = "DOFMaster Hyperfocal Chart for Windows® prints charts of hyperfocal distance for a range of lenses. The hyperfocal distance charts are log-log plots of the hyperfocal distance equation. Use feet or meters on the distance scale. Select focal lengths from 1 mm to 1000 mm. Print a chart for any format, digital to 8x10. Select apertures as small as f/64. Choose any circle of confusion.";

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';
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			document.getElementById('m2').style.display='none';
		if (document.getElementById('more_txt'))
			document.getElementById('more_txt').style.display='inline';
	}
	else
	{
		s.innerHTML = '';
	}
}