When you use

, the macro automatically adds the percent symbol to the end of the number, so that the value is specified as a percentage.

However, when you use

, the macro still adds the percent symbol to the end of the width in the generated <td> element. So, the width looks like this: width="50px%". This is interpreted differently on IE and Firefox. IE ignores the percentage sign, and interprets this as 50 pixels. Firefox ignores the "px", and interprets this as 50%.

Please allow the "px" designation for column width, and do not append the percentage sign when "px" appears at the end of the width.