3 column layout can be achieved with nested design. But sometines you may not like the extra wrapper div tags, e.g. the layout for tableless table. The Parallel layout is the solution.
Here we use left to seperate columns, that's why the position is relative.
Just drag the sliders to adjust the width of the columns. You can design liquid or fixed 3 column layout in minutes.
Liquid and fixed layouts generated by this tool has been tested in the following browers.