function openWindow(url,w,h) {
	if (w == null) w = 640;
	if (h == null) h = 480;
	
	window.open(url,"newWindow","width=" + w + ",height=" + h + ",left=0,top=0,menubar=no,status=no,toolbar=no,resizable=no,hotkeys=no,dependent=yes");
}