[Typepad] [Firefox] Bits of my blog not responding

I'm currently going through a redesign of my blog and have found that when I look at my site in Firefox the top third of the blog, including the top two google ads, the top few links in the post and everything above the odeo & itunes buttons are dead.

However, if I look at the same thing in Internet Explorer or Safari I have no such problem.

Could anyone tell me what the problem might be please. I am testing this all out before launching on my main site so you can find the problem I'm referring to here at Silverbrow on Food - New Logo. I think it must have something to do with my CSS or HTML but for the life of me can't figure it out.

Many thanks in advance.

Anthony from Silverbrow on Food