function getSilverlightVersion() {
    var version = '';
    var container = null;
    try {
        var control = null;
        if (window.ActiveXObject) {
            control = new ActiveXObject('AgControl.AgControl');
        }
        else {
            if (navigator.plugins['Silverlight Plug-In']) {
                container = document.createElement('div');
                document.body.appendChild(container);
                container.innerHTML = '<embed type="application/x-silverlight" src="data:," />';
                control = container.childNodes[0];
            }
        }
        if (control) {
            if (control.isVersionSupported('3.0')) { version = 'v3'; }
            else if (control.isVersionSupported('2.0')) { version = 'v2'; }
            else if (control.isVersionSupported('1.0')) { version = 'v1'; }
        }
    }
    catch (e) { }
    if (container) {
        document.body.removeChild(container);
    }
    if (version == '')
        return 'None';
    return version;
}