function popup (page, width, height, scrollbars, status) {

	LeftPosition = (screen.width-width) / 2
	TopPosition = (screen.height-height) / 2

	attributes = 'scrollbars='+scrollbars+'toolbar=0,location=0,directories=0,status='+status+',menubar=0,resizable=no,height='+height+',width='+width+',top='+TopPosition+',left='+LeftPosition

	window.open(page, "_blank", attributes)

}