which defines the properties telling where the new window will be located on the screen?

All ref's I've seen have Netscape using one pair of properties, "IE4+" another, but even those (top and left) aren't working for me on IE6+.

If there's no standard, what is the current terminology in IE?

And why does
alert("pixels from top = " + window.top)
produce
"pixels from top = [object]" in IE6

while the same with "left" instead of "top" produces "undefined"?

Because window.top means the top level window, if this is a frameset then the first declared frame otherwise the only window and is therefore a window object whereas window.left is something you just made up for an IE window so is undefined :)
Did you mean window.screenTop and window.screenLeft?

--

Joe (Microsoft MVP - XML)

Sorry - I was being dumb and missed the second meaning of "top". I arrived at my syntax based on reading that one of the properties (attributes?) of the winFeatures string [in "window.open(*,*,winFeatures)"] was "top", as in "...,top = 100,...") (and another was "left" - both IE only, Netscape using something completely different) and so I assumed that window.top would reference it (which is really dumb because the project I'm working on is a 4-frame window, and the javascript functions controlling all 4 frames are in frames[3], so I'm using "top" as a base reference every day.)

So, ARE .screenTop and .screenLeft W3 standard now (and therefore implemented in the current versions of most browsers)?

Thanks for the reply and whatever further info you can provide - I'm still very new at scripting.