function getcookievalue(name)
{
    var ind;
    name += '=';
    str = document.cookie;
    if ((ind = str.indexOf(name)) != -1)
    {
        var end = str.indexOf(';', ind);
        if (end == -1) end = str.length;
        str = str.substr(ind+name.length, end-ind-name.length);
        str = unescape(str);
        return str;
    }
    return '';
}

function setcookievalue(name, value)
{
    name += '=';
    var expDays = 100;
    var exp = new Date();
    exp.setTime(exp.getTime() + (expDays*24*60*60*1000));

    var expire = '; expires=' + exp.toGMTString();
    var str = name + escape(value) + expire;
    document.cookie = str;
}