ListGrid confirmDiscardEdits popup (modify buttons)

When the user sorts or filters the Listgrid the confirmDiscardEdits popup comes up if there are unsaved edits. I have my own custom Discard and Save methods and I want the buttons to trigger them instead of their default behavior. Also I want the buttons and the popup title to have different names. Is there a way to do this?
Right now I can only change the popup message with setConfirmDiscardEditsMessage().

Thanks

SmartClient Version: v8.3p_2013-04-15/Enterprise Deployment (built 2013-04-15)
Firefox 20.0.1