function popup(url) {
	var params = "width=700,height=730,scrollbars=yes,resizable=yes,toolbar=no,menubar=no,location=no";
	window.open(url, 'demo', params).focus();
	var bAgent = window.navigator.userAgent;
	var bAppName = window.navigator.appName;
	return bAppName.indexOf("Explorer") >= 0 && bAgent.indexOf("Mozilla/3") >= 0 && bAgent.indexOf("Mac") >= 0;
}