function getButtonConstants(btnId, key)
          {
           var constants = DYNAMIC_BUTTON.buttonConstants[btnId];
           if(typeof(constants) != "undefined" && constants != null)
            return constants[key];
           return null;
          }
          function onErrorRedirectWidgetUrl(widgetBaseUrl, trackUrl)
    {
     var redirectUrl = widgetBaseUrl;
     if ( trackUrl != null && trackUrl.length > 0 )
                    redirectUrl = toolbar.UrlReplaceMacros(trackUrl) + encodeURIComponent(redirectUrl);
     try