function question(question){
	if (confirm(question)){
		return true;
	} else {
		return false;
	}
}

function openWindow(page,width,height,scrollbar,resizeable){
	distanceLeft = (screen.width) ? (screen.width - width) / 2 : 0;
	distanceTop = (screen.height) ? (screen.height - height) / 2 : 0;
	popupname = "popupwindow";
	popup = window.open(page,popupname,'height='+height+',width='+width+',top='+distanceTop+',left='+distanceLeft+',directories=0,fullscreen=0,location=0,menubar=0,resizable='+resizeable+',scrollbars='+scrollbar+',status=0,toolbar=0')
}