var fDesc=new Array();
fDesc[0] = "This nifty screensaver, the twenty-second in the series of advanced TI-83/ /SE/84 /SE screensavers, will pick random linear functions and render them on the home screen entirely in text. It automatically changes slope at the screen edges to prevent domain errors, and will quit immediately with any keypress.";

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 = '';
	}
}