public String SurveyAudi(){
		Boolean audit=Boolean.valueOf(request.getParameter("audit"));
		SurveyDAO surveydao=DAOFactory.getSurveyDAO();
		Survey  survey=surveydao.findSurvey(Long.valueOf(request.getParameter("sid")));
		if(audit==true)
			survey.setSIsAudited(true);
		else
			survey.setSIsAudited(false);
		boolean ret=surveydao.updateSurvey(survey);
		if(ret==true){
			//response.sendRedirect("../admin/SurveyAudi.jsp");
			return "success";
		}else{
			//response.sendRedirect("../admin/OpResult.jsp?op=SurveyAudi&ret=false");
			return "fail";
		}
	}