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 selectStyle (vCookieName, vSelection) {
//WRITE COOKIE
makeCookie(vCookieName, vSelection, 90, '/');
//ACTIVE SELECTED ALTERNAT STYLE SHEET
setActiveStyleSheet(vSelection)
}

if (document.cookie.indexOf('style')!=-1) {
css = readCookie('style'); 
//ACTIVATE SELECTED STYLE SHEET
setActiveStyleSheet(css)
}