var fDesc=new Array();
fDesc[0] = "This is a client-server application for displaying very large (=global scale) terrain models. The terrain database is stored on a server, and the client program only fetches the data required for generating an image on your screen with the wanted resolution. As you moves around the program loads and throws out data as needed.";

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 = '';
	}
}