Sounds like a DHTML floating layer, there is SFA you can do if its on the site, it could be spyware but i dont think so.
I'm definately going to try. However, It's very basic CSS. I don't know how I can really "fix" it. I know when CSS first came out, Netscape and IE differed a lot. I'm sure Firefox might be experiencing something similar. It could just be a problem with the browser. Not sure though.
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