function redirectAjax(params, successCallback) {
    params.success = function(response) {
        var pattern = /^(https?:\/\/)?[a-z0-9_\.\/]+/i;
        var check = pattern.test(response);
        if (check !== false) {
            window.location.replace(response);
        } else {
            successCallback(response);
        }
    };
    params.error = function(response) {
        console.log('ajax error:' + response.data);
    };
    $.ajax(params);
}