How force the display of fixedheaders ?

jytest

Hi,

I use DataTables with server_processing and extra scroller.
My parameter
[code]"bDestroy": true[/code]

How to force the display of fixedheaders (with ascending and descending orders)?

My page is here: http://www.celinni.com/creaprint/recherche33.php
and click on a form (top of the page) for understanding of the case.

I do :
[code]$(".dataTables_scrollHead").height("25px");[/code]
but it doesn't work correctly. The titles don't display.
Just a reserved emplacement.

Thank you in advance for your help!