var fDesc=new Array();
fDesc[0] = "Navigation Simulator is a powerful navigation and orientation trainer. It offers the capability to learn general principles without having to use complicated and cumbersome flight controls or simulators for specific types of aircraft. Keyboard commands basically tell the aircraft to turn, stop turning, climb, level.";

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 = '';
	}
}