<zk>
    <label multiline="true">
    IE9 only
    1. Select "Tab 2"
    2. Move mouse to blank area next to "Tab 2" then click.
    "Tab 1" should not be selected.
    </label>
    <div>
        <tabbox width="100%">
            <tabs>
                <tab label="Tab 1" />
                <tab label="Tab 2" />
            </tabs>
            <tabpanels>
                <tabpanel>Test 1</tabpanel>
                <tabpanel>Test 2</tabpanel>
            </tabpanels>
        </tabbox>
    </div>
</zk>