var fDesc=new Array();
fDesc[0] = "Perpetuum mobile is an interactive, three-dimensional video-animation that also can be used as screen saver.<br /> The game field of Perpetuum mobile is an open room in which the observer looks into.<br /> The game-window can be altered variably in the size. Hereby, also the room-depth changes, which is then the smaller window-side multiplied with the room-depth-factor.";

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 = '';
	}
}