var query = location.search;

var cj_string = /WT.mc_n=(edu_cj_[^\&]+)/i;



if (query.search(cj_string) > -1) {

    var result = query.match(cj_string);

    var cj_flag = result[1];



    var hostname = location.hostname;

    var domain_string = /\W?(\w+\.\w+)$/;

    if (hostname.search(domain_string) > -1) {

        result = hostname.match(domain_string);

        hostname = result[1];

    }

    document.cookie = 'CJ_flag=' + encodeURIComponent(cj_flag) + '; path=/; domain=.' + encodeURIComponent(hostname);

}



// ... and that's all, folks.  We don't want an else statement here; that will just

// cause trouble if the user initially came in from a CJ site but is returning to this

// page after visiting various other sub-pages.