Hmmm. Sounds like the browser isn't rendering the page properly. (It's showing correctly here)
Check at the bottom left of the page and see that the style chooser is set to vb4 default style.
The first thing you might try is force reloading the page. Hold down the shift key and click the reload button.
If that doesn't do it, try clearing your cache and cookies and then reload the page.
Also if you have another browser check in it to see if the page is displaying properly.
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