var fDesc=new Array();
fDesc[0] = "VnetPC Pro+ is a ventilation network simulator designed to assist personnel in the planning of underground ventilation layouts. The program will provide detailed listings and graphical representations of Branch Airflows, Frictional Pressure Drops, Airway Resistance, Air Power Losses in Airways, Ventilation Cost of Each Airway, Fan Operating Points (Pressures and Airflows), Duties of Required Regulators and Booster Fans.";

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 = '';
	}
}