timesheets script

Hi,

I have been trying to disable the Case/Task/Event in the weekly timesheets area of our netsuite account.

I have used the customize button to define it as disabled but it still renders itself active.

I have also tried to hardcode it in  on the page init event but no luck.

a simple function

function pageload()
{
var ServiceItem1 = nlapiDisableLineItemField('timeitem' , 'item' ,true) ; // this will render the service item field disabled 
}

every other line item renders it self inactive when i write it to suite the particular element however only this  element proves to have a mind of its own...