Most of the posting buttons not working

[KAR]

Hi All,

When posting at my site I realized some of the posting buttons (almost all) are not working anymore.

Normally when you move the mouse over these button you will see a tools text but also the tools text does not appear.

Got another website (same patchlevel, same machine) and there is works fine.

Can anybody help me out with this?

Thx,
KAR