function popup(url,w,h,s,r) {
	s = s == void 0 ? ',scrollbars=1' : '';
	r = r == void 0 ? ',resizable=1' : '';
	l = (screen.width) ? (screen.width - w)/2 : 0;
	t = (screen.height) ? (screen.height - h)/2 : 0;
	winpops = window.open(url, '', 'top='+t+',left='+l+',width='+w+',height='+h+s+r);
}

function confirmAction(question, url, target) {
	if (confirm(question) == true) {
		if (target == '_blank') {
			var newWindow = window.open(url, '_blank');
			newWindow.focus();
		}
		else location.href = url;
	}
}