function popURL(url,title,w,h) {
	var width, height, left, top;
	width = w;
	height = h;
	left = (screen.width - width) / 2;
	top = (screen.height - height) / 2 - 55;
	window.open(url,title,'toolbar=no,location=no,status=no,menubar=no,scrollbars=yes,resizable=no,width='+width+',height='+height+',left='+left+',top='+top+'');
}