reassing object method that used object notation

[juicerific]

Hi, I am using an object written by someone else that was built like

MyObject = {
  MyMethod : function() {},
  ...
}

I thought I could do

MyObject.OldMethod = MyObject.MyMethod;
MyObject.MyMethod = function() {
  MyObject.OldMethod();
  newstuff;
};

but it doesn't work. Can anyone explain why, suggest a way to achieve this? The original MyMethod is called in many other places so I just want to override it and let it rip.

Thanks!!

[Sterling Isfine]

MyObject.OldMethod = MyObject.MyMethod;
MyObject.MyMethod = function() {
  this.OldMethod();
  //newstuff;
};