/* originally stolen from http://www.mikezilla.com/exp0020/exp0020.html */

function makeCookie(Name,Value,Expiry,Path,Domain,Secure){
  if (Expiry != null) {
    var datenow = new Date();
    datenow.setTime(datenow.getTime() + Math.round(86400000 * Expiry));
    Expiry = datenow.toGMTString();
  }
  Expiry = (Expiry != null) ? '; expires='+Expiry : '';
  Path = (Path != null)?'; path='+Path:'';
  Domain = (Domain != null) ? '; domain='+Domain : '';
  Secure = (Secure != null) ? '; secure' : '';
  document.cookie = Name + '=' + escape(Value) + Expiry + Path + Domain + Secure;
}

function readCookie(Name) {
  var cookies = document.cookie;
  if (cookies.indexOf(Name + '=') == -1) return null;
  var start = cookies.indexOf(Name + '=') + (Name.length + 1);
  var finish = cookies.substring(start,cookies.length);
  finish = (finish.indexOf(';') == -1) ? cookies.length : start + finish.indexOf(';');
  return unescape(cookies.substring(start,finish));
}

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

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

function selectStyle (vCookieName, vSelection) {
  makeCookie(vCookieName, vSelection, 90, '/');
  setActiveStyleSheet(vSelection);
}

if (document.cookie.indexOf('layout=') != -1) {
  css = readCookie('layout');
  setActiveStyleSheet(css);
}