dynamics crm - How to retrieve all Record Ids of a Sub Grid in CRM 2011 using javascript -

i have subgrid named timetickets, try:

var gridcontrol = document.getelementbyid('timetickets_d').control; var ids = gridcontrol.get_allrecordids(); 

but following error:

object doesn't support property or method 'get_allrecordids'

notes:

• crm rollup update 13
• browser: internet explorer 9

i solved in way:

var grid = xrm.page.ui.controls.get('timetickets')._control;  if (grid.get_innercontrol() == null) {     settimeout(subgridonload, 1000);     return; } else if (grid.get_innercontrol()._element.innertext.search("loading") != -1) {     settimeout(subgridonload, 1000);     return; }  var ids = grid.get_innercontrol().get_allrecordids();