> to. See bug 22274 (http://bugzilla.mozilla.org/show_bug.cgi?id=22274).
The image you have over the <div class="boxout"> is an inline element. this means that you get a few pixels below the image, since it's aligned to the baseline and we leave space for descenders below the baseline in line boxes. The simple solution is to make the image "display:block". The way it's used in your layout, that's exactly what you want to do...
