[thelist] problems with css hovers on windows

Hi,

I'm experiencing some strange problems with the 'buttons' on the
following page: http://home.planet.nl/~deman146/

When you move the mouse over one of them, all the other links disappear.
I checked the code over and over. I even ran it through the w3c
validator (css and html). nothing came out.
Strange enough the pages do work on the Macintosh (IE5 and NS6+7).

Can somebody help me out?

you can find the stylesheet here:
http://home.planet.nl/~deman146/css/style.css

thanks,
Gabor