Superfish Dropdown Menu Issues

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I just bought the Superfish C5 dropdown menu for Vivatemplates "Simplicity"... for my tech support website "computer-doctor.at"

as you can see the position and graphics after implementing it does not work properly and I would appreciate any help.

i did clear local cach and server cache, but to no avail.

Any ideas?

Thanks.

yusufdebruijn