Disabling IE window close verification

[sijgs]

I am trying to "close" the IE main window with window.close and get the annoying:

"The application is trying to close this window, Do you want to close this window"?

Does ANYONE know how to disable this or how to close the window and NOT get hung up on it? The method I am searching for should not include any USER keystrokes or mouse clicks.

Thanks,
JGS