var params = {};
var kvs = location.search.substring(1).split('&');
for (var i = 0; kvs[i]; i++) {
    var kv = kvs[i].split('=');
    params[kv[0]] = kv[1]
}
var cookies = {};
kvs = document.cookie.split(';');
for (var i = 0; kvs[i]; i++) {
    var kv = kvs[i].split('=');
    cookies[kv[0].trim()] = kv[1];
}
if (params['kcid'] && params['kuid'] && params['ks']) {
    if (!cookies['kcid'] || params['kcid'] !== cookies['kcid']) {
        var e = new Date();
        e.setFullYear(e.getFullYear() + 100);
        e = '; expires=' + e.toUTCString();
        document.cookie = 'kcid=' + params['kcid'] + e;
        document.cookie = 'kuid=' + params['kuid'] + e;
        document.cookie = 'ks=' + params['ks'] + e;
    }
}