Data grid table in div (no fixed width)

I have a data grid table (div based) that not in table format. I have done it in div based format with fixed width cell.

My problem

If I have add the column in the grid table, it will adjust like table format.

How can I do it?

Above table I need to add the column but it's all fi开发者_如何学运维xed width cell, if I add extra column the table collapses.

This is possible without table.

Just see below the link. http://jsfiddle.net/anglimass/BkwgY/2/