public static void GetStylesheetParametersForHost(ContentURI docToCalcURI,
                                                          ref IDictionary <string, string> styleParams)
        {
            //this host relies on unique steps
            //what parts of the calculator should be hidden or displayed?
            string sLastStepNumber = GeneralHelpers.GetFormValue(docToCalcURI, AppHelpers.General.STEP);

            if (string.IsNullOrEmpty(sLastStepNumber))
            {
                sLastStepNumber = string.Empty;
            }
            styleParams.Add(AppHelpers.General.STEPLAST, sLastStepNumber);
        }