Jeff,
This should work properly, though one thing to keep in mind is how web browsers render HTML tables. If a table column width is specified to be smaller than the content it contains, a web browser will expand the column to fit the contents of the column. For example, if the width of a column is set as 1 pixel, but that column contains "abcdefg" the column will be expanded by the web browser to however many pixels are necessary to accomodate "abcdefg".
One thing to try is to set the width of the matrix as a whole, then set the individual column widths.
-N
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