var fDesc=new Array();
fDesc[0] = "The user has to choose one of the predefined pulse functions (gaussian, rectangular, SINC, raised cosine) or enter another function in the Function combo-box, using symbols, described in case-sensitive help (clicking F1 or ? in the right upper corner of the main window). User can save own-entered function or delete it (Save and Delete buttons)";

function tShowHide(id, show)
{
	var s = document.getElementById("desc");

	if ((s.innerHTML.length<=212 || show==1) && show!=2)
	{
		s.innerHTML = fDesc[id];
		if (document.getElementById('m1'))
			document.getElementById('m1').style.display='none';
		if (document.getElementById('m2'))
			document.getElementById('m2').style.display='none';
		if (document.getElementById('more_txt'))
			document.getElementById('more_txt').style.display='inline';
	}
	else
	{
		s.innerHTML = '';
	}
}