Fixed width for rows of scrollable table

aavijeh

I have a scrolling table with so many fields that go visible and non visible. whatever I do I cannot fix the width of rows to the exact "px". For each row I have defined both class and "swidth" . The other problem is whenever all the rows are visible the header does not match the rows for width. What should I do?

aavijeh

Whenever I add a column or hide it the header and table showing will not match the width.