function openWindow(){
		sub=window.open("dvd.html","new","toolbar=no,location=no,status=no,menubar=no,scrollbars=yes,resizable=no,width=970,height=640");
		sx=970;
		sy=640;
		x=(screen.width-sx)/2;
		y=(screen.height-sy)/2;
		sub.moveTo(x,y);
}