function fontsizeup(name) {

	active = getActiveStyleSheet();
	switch (active) {
		case 'A' : 
			setActiveStyleSheet('A+');
		//document.images.abc1.src = 'images/pienenna_'+name+'.gif';
		//document.images.abc3.src = 'images/suurenna_'+name+'.gif';
			break;
		case 'A+' : 
			setActiveStyleSheet('A++');
		//document.images.abc1.src = 'images/pienenna_'+name+'.gif';
		//document.images.abc3.src = 'images/suurenna_inact.gif';
			break;
		case 'A++' :
			break;
		default :
			setActiveStyleSheet('A++');
		//document.images.abc1.src = 'images/pienenna_'+name+'.gif';
		//document.images.abc3.src = 'images/suurenna_inact.gif';
			break;
	}
}

function fontsizedown(name) {
	active = getActiveStyleSheet();
	switch (active) {
		case 'A++' :
		setActiveStyleSheet('A+');
		//document.images.abc1.src = 'images/pienenna_'+name+'.gif';
		//document.images.abc3.src = 'images/suurenna_'+name+'.gif';
			break;
		case 'A+' : 
			setActiveStyleSheet('A');
		//document.images.abc1.src = 'images/pienenna_inact.gif';
		//document.images.abc3.src = 'images/suurenna_'+name+'.gif';
			break;
		case 'A' :
			break;
		default :
			setActiveStyleSheet('A');
		//document.images.abc1.src = 'images/pienenna_inact.gif';
		//document.images.abc3.src = 'images/suurenna_'+name+'.gif';
			break;
	}
}

function setActiveStyleSheet(title) {
	var i, a, main;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title")) {
			a.disabled = true;
			if(a.getAttribute("title") == title) a.disabled = false;
		}
	}
}

function getActiveStyleSheet() {
	var i, a;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("title") && !a.disabled) return a.getAttribute("title");
	}
	return null;
}

function getPreferredStyleSheet() {
	return ('A');
}

function createCookie(name,value,days) {
	if (days) {
		var date = new Date();
		date.setTime(date.getTime()+(days*24*60*60*1000));
		var expires = "; expires="+date.toGMTString();
	}
	else expires = "";
	document.cookie = name+"="+value+expires+"; path=/";
}

function readCookie(name) {
	var nameEQ = name + "=";
	var ca = document.cookie.split(';');
	for(var i=0;i < ca.length;i++) {
		var c = ca[i];
		while (c.charAt(0)==' ') c = c.substring(1,c.length);
		if (c.indexOf(nameEQ) == 0) return c.substring(nameEQ.length,c.length);
	}
	return null;
}

function textVersion(version){
	var i, a, ver;

	ver = getVersion();
	switch(ver){
		case 'normal':
			ver = 'text';
			break;
		case 'text':
			ver = 'normal';
			break;
	}
	setVersion(ver);
}

function setVersion(title) {
	var i, a, main;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("alt")) {
			a.disabled = true;
			if(a.getAttribute("alt") == title) a.disabled = false;
		}
	}
}

function getVersion() {
	var i, a;
	for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
		if(a.getAttribute("rel").indexOf("style") != -1 && a.getAttribute("alt") && !a.disabled) {
			return a.getAttribute("alt");
		}
	}
	return null;
}


window.onload = function(e) {
	var cookie = readCookie("style");
	var title = cookie ? cookie : getPreferredStyleSheet();
	setActiveStyleSheet(title);
	var cookie = readCookie("alt");
	var version = cookie ? cookie : 'normal';
	setVersion(version);

}
	
	
/*
function changeZoomImages(name) {

	active = getActiveStyleSheet();
	switch (active) {
		default :
		document.images.abc1.src = 'images/pienenna_inact.gif';
		document.images.abc3.src = 'images/suurenna_'+name+'.gif';
			break;
		case 'A+' : 
		document.images.abc1.src = 'images/pienenna_'+name+'.gif';
		document.images.abc3.src = 'images/suurenna_'+name+'.gif';
			break;
		case 'A++' :
		document.images.abc1.src = 'images/pienenna_'+name+'.gif';
		document.images.abc3.src = 'images/suurenna_inact.gif';
			break;
	}
}*/

window.onunload = function(e) {
	var title = getActiveStyleSheet();
	createCookie("style", title, 365);
	var version = getVersion();
	createCookie("alt", version, 365);
}

var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
if (title == 'null') {
	title = getPreferredStyleSheet();
}

setActiveStyleSheet(title);

var cookie = readCookie("alt");
var alt = cookie ? cookie : 'normal';
if (alt == 'null') {
	alt = 'normal';
}

setVersion(alt);