public String getBrowserType(HttpServletRequest request)

  {

    String type = "ie";

    String browserName = request.getHeader("USER-AGENT").toLowerCase();



    if (browserName.indexOf("msie") > 0) {

      type = "ie";

    }



    if (browserName.indexOf("firefox") > 0) {

      type = "firefox";

    }



    if (browserName.indexOf("chrome") > 0) {

      type = "chrome";

    }



    if (browserName.indexOf("opera") > 0) {

      type = "opera";

    }

    if(browserName.indexOf("gecko")>0 && browserName.indexOf("rv:11")>0){

      type="ie11";

    }



    return type;

  }