function getUrlParams(prop) {
    var params = {};
    var search = decodeURIComponent(window.location.href.slice(window.location.href.indexOf('?') + 1));
    var definitions = search.split('&');
    definitions.forEach(function (val, key) {
        var parts = val.split('=', 2);
        params[parts[0]] = parts[1];
    });
    return (prop && prop in params) ? params[prop] : params;
}