var tsx=0;

function tsinit(x)
{



	
	tsx=x;
	s = document.cookie + ";";
	i = s.indexOf("P14TS");
	if (i < 0) return;
	j = s.indexOf(";", i);
	if (j < 0) return;
	n = parseFloat(s.substr(i+6, j-i-6));
	if (n < 2 || n > 4) return;
	tschange(n);
}

function tschange(n)
{
	e = document.getElementById("mainDiv");

	//alert(e);

	
	if (e == null) return;
	/*document.cookie = "P14TS=" + n + "; expires=Sun, 01 Dec 2030 23:59:59 GMT; path=/; domain=open.ac.uk;";*/
	document.cookie = "P14TS=" + n + "; expires=Sun, 01 Dec 2030 23:59:59 GMT; path=/;";
	if (document.getElementById("ts1"))
	{
		if (n == 1) document.getElementById("ts1").style.borderColor='#547FBD'; else document.getElementById("ts1").style.borderColor='#ccc';
		if (n == 2) document.getElementById("ts2").style.borderColor='#547FBD'; else document.getElementById("ts2").style.borderColor='#ccc';
		if (n == 3) document.getElementById("ts3").style.borderColor='#547FBD'; else document.getElementById("ts3").style.borderColor='#ccc';
	}
	if (n == 4)
	n = 140;
	else
	n = 90 + n * 10;
	e.style.fontSize = n + "%";
	for (i=1 ; i <= tsx ; i++)
	{
		e = document.getElementById("tsx" + i);
		if (e) e.style.fontSize = n + "%";
	}
	e = document.getElementById("tsheader");
	if (e) e.style.fontSize = n + "%";
	e = document.getElementById("tsfooter");
	if (e) e.style.fontSize = n + "%";
}