window.openDemo = window.openDemo || function() {
    var windowOptions = 'toolbar=0,location=0,directories=0,scrollbars=0,status=0,menubar=0,width=600,height=477';
    window.open('http://www.babylon.com/systems/pages/demo.html', 'demo', windowOptions);
    if (!windowOptions.opener) {
        windowOptions.opener = self;
    }
}