var vrHeight = 605;
    var vrWidth = 1005;

    function startVR(name, pano, lang)
    {
        var vrLeft = ((screen.availWidth - vrWidth)/2);
        var vrTop = ((screen.availHeight - vrHeight)/2);
        window.open('html/' + lang + '/' + name + pano + '.html', '360_degree_vrtour', 'width=' + vrWidth + ',height=' + vrHeight + ',top=' + vrTop + ',left=' + vrLeft + ',menubar=no,resizable=no, scrollbars=no, toolbar=no');
    }