code: function _applyTriggerHook(sEventType) {
  		if (!jQuery.event.special[sEventType]) {
  			jQuery.event.special[sEventType] = {};
  		}
  		var oSpecialEvent = jQuery.event.special[sEventType],
  			originalTriggerHook = oSpecialEvent.trigger;
  
  		oSpecialEvent.trigger = fnTriggerHook;
  
  		return originalTriggerHook;
  	}
docs: Register special jQuery.trigger event hook