HTML / Javascript / DHTML and Firefox question

[Retro2001]

I found a little JS/DHTML script the other day for a hierarchal menu. By it self it works fine across the board, but when I stick the menu in a frame, it stops working under firefox (IE and Konqueror still work fine). I've not found the right string of words to feed google to sort this out. Any ideas or suggestions for places I can look for info about this?

Example!

Thanks,
will

 

[CTho9305]

It doesn't work for me, even out of a frame. Try taking the 'none' out of single-quotes.... it should be:
style="display:none;"