CRM 2011 On-Premise + UR 12 : grid.attachevent() method not supported

Hi,

I have the following code in my application, to refresh a subgrid and attach an event on refresh of the grid.

I am trying to call a method on refresh of the subgrid but the attachEvent method doesn't work.

function ReLoadComponent()
{
var grid = document.getElementById("ReplacementSchedule");
grid.control.refresh();
 if (grid) {
grid.attachEvent("OnRefresh", ReLoadComponentForm);
}
}

The code worked fine before the installation of UR 12.

Could anybody help me out on this? There is probably some UR 12 and javascript compatability issue which i am unable to figure out.