function ob(u,w,h,s,r,n) {
	// url, width, height, scrollbars, resizable, name
	var winl = (screen.width - w) / 2;
	var wint = (screen.height - h) / 2;
	var winprops = 'height='+h+',width='+w+',top='+wint+',left='+winl+',scrollbars='+s+',resizable='+r+'';
	window.open(u,n,winprops);
}