Just went to your site >
http://www.mobile-phone-batteries.co.uk/home.php
Have you tested your site in IE7 for example, things are breaking up, and your left and columns break up, and drag to centre content, also bottom box on your home page, borders break up.
Obviously this is only visual and as far as I can see it doesn't effect anything technical, but there are a lot of users that still use IE6/7/8
And a good visual site is important in most major browsers, Juts trying to help.
BTW:
What browser are you using to view and design etc?