MktoForms2 :: Multi-checkbox to Thank You

HTML

<script src="//app-sj01.marketo.com/js/forms2/js/forms2.min.js"></script>
<form id="mktoForm_116"></form>
<script>
    MktoForms2.loadForm("//app-sj01.marketo.com", "410-XOR-673", 116,

    function(form) {
        form.onSuccess(function(form, thankYouBaseURI) {
            var allChecked = [];

            for (var labels = this.formElem[0].querySelectorAll('input[type=checkbox] ~ label'), i = 0, imax = labels.length; i < imax; i++) {
                var lbl = labels[i].innerText; // label text
                var cbx = document.getElementById(labels[i].htmlFor) // label's associated input
                if (cbx.checked) {
                    
                    allChecked.push( lbl ); // add label of checked checkbox to array

                }
            }

            // append checked to the #hash of the Thank You page and redirect
            var thankYouFullURI = document.createElement('A');
            thankYouFullURI.href = thankYouBaseURI;
            thankYouFullURI.hash = allChecked;
            document.write(thankYouFullURI);
            window.location.assign(thankYouFullURI);
            return true;
        });
    });
</script>

CSS

INPUT:focus {
    outline: none;
}