Create a persistent cookie

JS-PersistentCookie.js

var setCookie = function(name, val) {
    //reference: http://stackoverflow.com/a/8733385/1887264

    var expiration_date = new Date();
    var cookie_string = '';
    expiration_date.setFullYear(expiration_date.getFullYear() + 1);
    // Build the set-cookie string:
    cookie_string = name + '=' + val + '; path=/; expires=' + expiration_date.toGMTString();
    // Create/update the cookie:
    document.cookie = cookie_string;
};