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(){
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.onload = function(e){
var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);}
window.onunload = function(e){
var title = getActiveStyleSheet();
createCookie("style", title, 365);}
var cookie = readCookie("style");
var title = cookie ? cookie : getPreferredStyleSheet();
setActiveStyleSheet(title);