Hi Neil.Very nice, clean sharp site. I especially like your rollover buttons.
I like the buttons so much, I would recommend switching them around, and have the black-on-white part showing all the time and have the white-text buttons on rollover. If I was doing it, I would probably make them a little shorter so as not to draw attention away from the logo.
I would also do the black-on-white for your logo. It would really dress it up and make it stand out.
To make the yellow part stand out, you could make black, 2-pixel wide cells all around it (to make it look like a border) and use some cell padding or something to get your words away from the edge of the cell a little bit.
Don't forget to add alt text for your graphics.
Good job!
Sandy
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