var fDesc=new Array();
fDesc[0] = "The calculator has been developed as an aid for AO-40 users. It was done in Microsoft Excel which must be installed in your PC. In tools and options window of Excel you can set a form which looks like in the following figures. All the frequencies are in MHz but the BRX display and RX display are put separately in MHz and kHz (4 digits without decimal point) for practical reason.";

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