Looks good in both Mozilla Firefox 0.8 and MS Internet Explorer 6, plus it's valid XHTML - what else could you want?
Edit: oops, minor point: you have used an & instead of an &amp; which the XHTML validator only comments on but the CSS validator refuses to accept. It's a minor point, but you might want to sort it out.
"If youíre not using valid HTML, then you havenít created a Web page. You may have created something else, but it isnít a Web page." - Joe Clark
everything works, i found though that using MS-IE 5.0, that your bottons on the left moved more towards the right of the page, and untill i moved my mouse on each of the buttons they where out of place.