The columns are controlled by one 3 column table with each column set to a specific width. The pal boxes inside these columns expand to 100% which will end up being the same width as the column it is in. I have viewed 4 different sites, including my own test sites, with Mozilla 1.1, IE 6.0, Opera 6.0.5 and Netscape 7.0 and the only thing I have noted is that Opera does not handle the <iframe> width being set in a percentage as the other browsers do.
Now that IIP is XHTML 1.0 compliant there should be no layout problems when viewed with a standards compliant browser such as the ones noted above with the exception of Opera. I am told that Opera 7.0 will be comming up in the near future so that may help the layout of the <iframe>, I hope.
Note: I just set IIP to 60,20,20 here at ThreadsDev and in Mozilla 1.1 it looks as it does in IE. Have you altered the html in the index?
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