function getSilverlightVersion() {
    var version = '';
    var container = null;
    try {
        var control = null;
        var product = 'Silverlight';
        if ( navigator.appVersion.indexOf("Linux")!=-1) product="Moonlight";
        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('2.0')) { version = product + '/2.0'; }
            else if (control.isVersionSupported('1.0')) { version = product + '/1.0'; }
        }
    }
    catch (e) { }
    if (container) {
        document.body.removeChild(container);
    }
    return version;
}