opening an image in a new window without a border

[D. Alvarado]

Hello,
I am trying to open a window containing an image and I would like
the image to be flush against the window -- i.e. have no padding or
border. Can I make this happen with a single call to a window.open
function? I would prefer not to create a separate HTML page. So far
all I have is the basic

var cwin = window.open('images/KJV-THANKS.gif',
'Thanks', 'width=243,height=420,');
cwin.focus();

If there's any cross-browser JS I can add to eliminate padding in the
new window, that would be awesome.

Thanks, - Dave