Here's a fun trick:
```
var handles = new Y.EventHandle([
    Y.on("MSPointerEnter", onContainerMSPointerEnter, "#container-1"),
    Y.on("MSPointerLeave", onContainerMSPointerLeave, "#container-1"),
    ...
]);
...
Y.one('#remove-listeners').on('click', handles.detach, handles);
```