proportional column width in XSLT

Hi:

Is there a way to achieve proportional column widths
in XSLT like in XSLFO for CALS table? Example, if
there is an XML input for  table with proportional
column wdths 
<colspec colwidth=proportional-column-width(1)> which
would be actually 1*,
how do u convert this into an HTML table and how to
calculate the proportional column widths? 



 
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