function popIt(url,name,w,h) {
	xposition = (screen.width - w) / 2;
	yposition = (screen.height - h) / 2;	specs="toolbar=no,location=no,directories=no,status=yes,menubar=no,scrollbars=no,resizable=no,width=" + w + ",height=" + h + ",screenx=" + xposition + ",screeny=" + yposition + ",left=" + xposition + ",top=" + yposition;
	window.open(url,name,specs);
}