Html Table sort issue where the table is devided into two parts

Hi Friends,

I am having html table , To reduce the table length I am deviding table in to two parts,and displaying my records as follows rather than using scroll bar.
Empno Ename Empno Ename
1 A 2 u
3 x 4 Y
5 t 6 B

then I am applying javascript for table sorting,but sorting is happening in row wise like above.

My requirement is sorting should happen in column wise
as follows

Empno Ename Empno Ename
1 A 4 u
2 x 5 Y
3 t 6 B

I am using javascript from the following link for sorting
[url]http://www.kryogenix.org/code/browser/sorttable/[/url]

Any one please give me the code for coulumn wise sorting.

Thanks in advance.

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