Dear KokFoo,
I have tested your html code in IE,Firefox,Chrome,Safari,and Opera, I can reproduce this issue in IE.
If you replace "#" with different value, this issue will not happen in IE.
- <li><a href="#" rel="country1" class="selected">Tab 1</a></li>
- <li><a href="#" rel="country2">Tab 2</a></li>
- <li><a href="#" rel="country3">Tab 3</a></li>
- <li><a href="#" rel="country4">Tab 4</a></li>
Thank you for asking