function CenterPupupWindow(mypage, myname, w, h)
{
	var winl = (screen.width - w) / 2;
	var wint = (screen.height - h) / 2;
	var settings = 'height=' + h + ',';
	settings += 'width=' + w + ',';
	settings += 'top=' + wint + ',';
	settings += 'left=' + winl + ',';
	settings += 'scrollbars=no,';
	settings += 'resizable=no';

	win = window.open(mypage, myname, settings);

	if (parseInt(navigator.appVersion) >= 4) { win.window.focus(); }
}