If I open a window using 

```
window.open('myurl.html', 'windowname', 'width=100,height=100');

```

How do I refer to the new window (from the same page that opened it) using 'windowname'? This question is specifically about this. I'm aware that I could save a reference to the handle by using "var mywin = window.open(...)" but I don't care about that in this situation.

Thanks, - Dave