The layers you wish to show and hide can be placed anywhere in your
document, even in a cell of a centered table. This can be accomplished
by nesting the layers within a relative-positioned div.
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The code is very simple. It is the same as that for showing and
hiding absolute-positioned layers except for an extra bit of code to
help Netscape 4 find a reference to the nested layers.
Style specifications for the layers are set in a style sheet in the
head of the document. Inline style specifications often cause problems
for Netscape 4.