function SetCookie(k,v,n) {
        var today = new Date();
        var expire = new Date();
        if (n==null || n==0) n=1;
        expire.setTime(today.getTime() + 3600000*24*n);
        document.cookie = k+"="+escape(v) + ";path=/;expires="+
                          expire.toGMTString();
}

function GetCookie(n) {
        var nameEQ = n + "=";
        var ca = document.cookie.split(';');
        for (var i=0; i < ca.length; i++) {
                var c = ca[i];
                while (c.charAt(0) == ' ') c = c.substring(1,c.length);
                if (c.indexOf(nameEQ) == 0)
                        return c.substring(nameEQ.length,c.length);
        }
        return null;
}