function pop(url,width,height,status,toolbar,scrollbars) {
	if (width == null) w = 600; else w = width;
	if (height == null) h = 400; else h = height;
	if (status == null) st = 0; else st = status;
	if (toolbar == null) tb = 0; else tb = toolbar;
	if (scrollbars == null)	sb = 1; else sb = scrollbars;
	open(url,"_blank","status="+st+",toolbar="+tb+",scrollbars="+sb+",resizable=1,width="+w+",height="+h+",screenX=30,screenY=30,left=50,top=50");
	}