function set_cookie(name, value, exp_y, exp_m, exp_d, path, domain, secure) {
     var cookie_string = name + "=" + escape(value);

     if (exp_y) {
         var expires = new Date(exp_y, exp_m, exp_d);
         cookie_string += "; expires=" + expires.toGMTString();
     }

     if (path)
         cookie_string += "; path=" + escape(path);

     if (domain)
         cookie_string += "; domain=" + escape(domain);

     if (secure)
         cookie_string += "; secure";

     document.cookie = cookie_string
 }

 function get_cookie(cookie_name) {
     var results = document.cookie.match('(^|;) ?' + cookie_name + '=([^;]*)(;|$)');
     if (results)
         return (unescape(results[2]));
     else
         return null;
 }