Table Drag and Drop - Cells

Table Drag and Drop - Cells

Dear Friends,

I want to have a html-table where
an user is able to drag and drop
all cells (td) inside of it.

There is a solution for JQuery. -
( http://www.isocra.com/2008/02/table-dra ... ry-plugin/ )
But here the whole row will be moved.
I want to move a single cell only.

And - it's also very important:
Some cells have a rowspan greater than 1.

Is there a way to modify this library
or is there an easier way to get this effect?

Thank you for your help and support!
With best regards
Innocentus