Search Bar Effect . Css Problem

[edoplaza]

Hello everybody,

 

I am finishing a site, and I have a little css problem I can't solve:

 

http://www.rubencantafio.com/wp/

 

On the search button (magnifying glass), the slide effect works like a charm, but on Opera (both PC and Mac) the position of the button is wrong is always wrong.

 

What's happening? It's driving me crazy.

 

Thanks,

 

Eduardo