Cart to far to the right on certain products?

[Sublevel]

hi,

 

im new to OSC and ive got a problem with the layout.. (only in firefox)

 

when i try to buy (add to cart/comprar) the cart shows up but i need to scroll to the right.

 

here is the example :http://safe-safe.be/index.php?action=buy_now&products_id=195

 

where should i be looking? i mean on what page?

 

because more and more support firefox (as do i) this is a problem...

 

please help me find the problem.

 

thanks in advance