function popUp(url, width, height) {
		var cntx = (screen.width - width) / 2;
		var cnty = (screen.height - height) / 2;
		window.open(url, 'null', 'left=' + cntx + ',top=' + cnty + ',width=' + width + ',height=' + height +',directories=no,menubar=no,scrollbars=no,status=no,location=no,toolbar=no,resizable=no');
	}
	
	function popUpV(url, width, height) {
		var cntx = (screen.width - width) / 2;
		var cnty = (screen.height - height) / 2;
		window.open(url, 'null', 'left=' + cntx + ',top=' + cnty + ',width=' + width + ',height=' + height +',directories=no,menubar=no,scrollbars=yes,status=no,location=no,toolbar=no,resizable=no');
	}