V2.0 how to disable sorting ?

Hi,
I have been using this product since long and i love it !! i have tried the latest version 2.0. I need to disable sorting on headers as i am executing some other function on the header click. In the last version i was using

obj.getTemplate("top/item").setEvent("onmousedown", null);

to disable the sorting, but v2.0 i have no idea how to disable the sorting. i tried using

obj.sort = function(index, direction){return true;}

and

obj.onHeaderMouseDown = function(event, index){ null};

but no success. Please suggest.

thanks,
Samir

the only way I have been successful in doing this is to change the grid to aw.tree.grid

this really doesnt suffice for me as i want to disable every aspect of the grid including the sort. it doesnt seem to make sense to change the grid to tree for this purpose

i also tried
obj.onHeaderClicked = function(event,index){return null};

but that didnt work.....

can someone please help?

well, gosh, i wish i had read the forum for just 2 seconds more....

this works:
obj.onHeaderClicked = function(event,index){return 'disabled'};