function setCookie (name, value, expires, path, domain, secure) {
      document.cookie = name + "=" + escape(value) +
        ((expires) ? "; expires=" + expires.toGMTString() : "") +
        ((path) ? "; path=" + path : "") +
        ((domain) ? "; domain=" + domain : "") +
        ((secure) ? "; secure" : "");
}

var c_td = new Date;
setCookie('rnd', Math.round((Math.random()*100)/10), new Date(c_td.getTime() + 3600000), '/');