function setContrast() {
var c = document.getElementById("contrast");
if(blContrast){
blContrast = false;
c.className = c.className.replace("active","");}
else {
blContrast = true;
c.className = "active";}
setActiveStyleSheet(getActiveStyleSheet());}
function setActiveStyleSheet(title) {
var i, a, main;
var aFont = document.getElementById(title);
var s = document.getElementById("small");
var m = document.getElementById("medium");
var l = document.getElementById("large");
var c = document.getElementById("contrast");  
if(aFont != null) {
s.className = s.className.replace("active","");
m.className = m.className.replace("active","");
l.className = l.className.replace("active","");
aFont.className = "active";
if(blContrast)c.className = "active";}
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;
if(blContrast && a.getAttribute("title") == "contrast") 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() {
var i, a;
for(i=0; (a = document.getElementsByTagName("link")[i]); i++) {
if(a.getAttribute("rel").indexOf("style") != -1
&& a.getAttribute("rel").indexOf("alt") == -1
&& a.getAttribute("title"))
return a.getAttribute("title");}
return null;}
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;}
window.onunload = function(e) {
var title = getActiveStyleSheet();
createCookie("style", title, 365);
createCookie("styleContrast", blContrast, 365);}
var cookie = readCookie("style");
var cookie2 = readCookie("styleContrast");
if(cookie2 == "true") {var blContrast = true;} else {var blContrast = false;}
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);