function setCSS(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;
  }
}
return false;
}

function getCSS() {
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 getDefaultCSS() {
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;
}

if (document.getElementsByTagName) {
  window.onload = function(e) {
    var cookie = readCookie("style");
    var title = cookie ? cookie : getDefaultCSS();
    setCSS(title);
  }

  window.onunload = function(e) {
    var title = getCSS();
    createCookie("style", title, 365);
  }

  var cookie = readCookie("style");
  var title = cookie ? cookie : getDefaultCSS();
  setCSS(title);
}