There is no way to fix it. That is just how it is. Maybe when they make NN 7 they will get it right. There are many DHTML tricks that do work in NN, you just have to pick them out.You can add IE into your FP editors list. You must have done it to have NN in there. Or you can try running IE and when it asks to be made the default browser then say yes.
Hope this helps.
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Gene White
WebTeky Full Service Web Development
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