setTimeout and the 'this' reference (finding my object)

[admin]

I have a javascript class that would like to have its own setInterval feature. To do this, I would like the method invoked by the window to understand which object instance it is. Ideally, I could pas the this down but it looks like IE only allows:

window.setInterval("code", 100);

and not

window.setInterval(MyClass.myFunc, 100, this);

Is there any technique for the setTimeout/Interval handlers to understand which object instance?

Thanks in advance
Doug