(t) {
        document.querySelector("#test").innerHTML = '<iframe src=htmllabel-form-activation.html \
            id="foo" name="foo"></iframe>'

        var loaded = false;
        var iframe = document.getElementById('foo');
        iframe.onload = t.step_func(function() {
            if (!loaded) {
                loaded = true;
                iframe.contentDocument.getElementById('tenth').click();
            } else {
                t.done();
            }
        });
    }, "label click should flow