CRMApplication = new ActiveXObject('TSCRM.CRMApplication');
CRMApplication.StartWork();    
var NewConnector = CRMApplication.Connector;
if (NewConnector.Login('')) {
        MainWindow = NewConnector.Services.GetNewItemByUSI('wnd_Main');
        MainWindow.Prepare();
        MainWindow.ShowModal();
        NewConnector.Logoff();
}
CRMApplication.FinishWork();