<%@ Page Language="C#" Debug="true" %> <% string zh_choose = "s"; if (Session["lan"] != null) { zh_choose = (string)Session["lan"]; } if (Request.QueryString["lan"] != null) { zh_choose = Request.QueryString["lan"].ToString(); Session.Add("lan", zh_choose); } Response.Write("var zh_choose='" + zh_choose + "';"); %>