This method is static so you don't need to instantiate an object:
wwEvent.removeEventListener( document,"mousemove",Instance.mouseMove,false);
o.removeEventListener(target,eventname,handler,bubbles)
eventname
Name of the event as a string (ie. click, change, mousedown etc.)
handler
Function pointer to the handler function that will handle this event.
bubbles
true if you want event bubbling to continue - false if you want it to stop propagating.