I have "next" and "previous" buttons uploaded, and I followed the rollover tutorial exactly, but whenever I put my cursor over one of them the bottom of the regular button pops up at the top of the image.
Sorry man. I'm no expert on button positioning and replacement using Css. Css positioning can be tricky to use on a comic site where the size of images can be changeable and buttons can move due to the absence of other buttons (like when you're on the first and last pages).
I think you have to use static positioning, not define the properties of absolute or relative positions... I'm just guessing though.
Okay, now I can't seem to get them centered. I've tried everything I could think of, and whenever I align more than one of them to "center", they just stack up.