function popupCenter(url, name, width, height, sbars)
{
	var left = (screen.width - width) / 2;
	var top  = (screen.height - height) / 2;
	var options = "left=" + left + ",top=" + top +",width=" + width + ",height=" + height + ",scrollbars=" + sbars + ",resizable=1" + ",status=1";
	newWin = window.open(url, name, options);
	return newWin.focus();
}