Hi!
For reasons of safety, there's no way to remove the X button with Javascript - but they might have introduced it already, who knows, IE is well-known for such things.
Standard Javascript shouldn't support it - here's the complete combination of all styles for a newly created window:
function OpenNewWin(url, winname, w, h) {
window.open(url, winname, 'toolbar=0,location=0,directories=0,status=0,menubar=0,scrollbars=1,resizable=0,copyhistory=0,width='+w+',height='+h);
}
Best regards,
Stas