function changeStyleSheet(title) {
   var links = document.getElementsByTagName("link");
                for(var i = 0; i < links.length; i++) {
                                if(links[i].getAttribute("title")) links[i].disabled = true;
                                if(links[i].getAttribute("title") == title) {
                                                links[i].disabled = false;
                                                var expires = new Date();
                                                expires.setTime(expires.getTime() + (30*24*60*60*1000));
                                                document.cookie = "stylesheet="+title+";expires="+expires.toGMTString()+";path=/";
                                }
                }
}

function getStylesheetFromCookie() {
                var cookie = document.cookie.split(";");
                for(var i = 0; i < cookie.length; i++) {
                                var values = cookie[i].split("=");
                                if (values[0] == "stylesheet") changeStyleSheet(values[1]);
                }
}