Centered window

[clueless]

Can anyone help with a little problem?

I know how to position a window by pixel co-ordinates, but how can I position a window (say centered) no matter what the screen resolution is

Hope this is in the right forum

[clueless]

Have just worked it out

Quite simple really. If anyones interested:

<script>

var w=(screen.width-400)/2;
var h=(screen.height-300)/2;

window.open("something.html", "", width=400, height=300, left="+w+", top="+h+"")

</script>