Browser ID Wordpress login.js

function browserid_login() {
    navigator.id.getVerifiedEmail(function(assertion) {
        if (assertion) {
            rememberme = document.getElementById('rememberme');
            if (rememberme != null)
                rememberme = rememberme.checked;
            var form = document.createElement('form');
            form.method = "POST";
            form.action = browserid_siteurl;
            form.id = "assertion_send_form";

            var assertion_field = document.createElement('input');
            assertion_field.type = "hidden";
            assertion_field.name = "browserid_assertion";
            assertion_field.value = assertion;
            form.appendChild(assertion_field);

            var remem_field = document.createElement('input');
            remem_field.type = "hidden";
            remem_field.name = "rememberme";
            remem_field.value = rememberme;
            form.appendChild(remem_field);

            if (browserid_redirect != null){
            var remem_field = document.createElement('input');
            redir_field.type = "hidden";
            redir_field.name = "redirect_to";
            redir_field.value =  browserid_redirect;
            form.appendChild(redir_field);
            }
            var my_form = document.body.appendChild(form);
            my_form.submit();

        }
        else
            alert(browserid_failed);
    });
    return false;
}