js通过隐藏iframe修改session值

js:
function selects(id, ss) {
    window.frames["UpSession"].window.location.href = "../UpSession.aspx?ss=" + ss;
}

Html:
 <iframe src="../UpSession.aspx" name="UpSession" id="UpSession" width="0" height="0"
            scrolling="no" frameborder="0"></iframe>

.cs:
//修改leixing的session值
        if (!string.IsNullOrEmpty(Request.QueryString["ss"]))
        {
            Session["Leixing"] = Request.QueryString["ss"];
        }
        else
        {
            Session["Leixing"] = Session["Leixing"];
        }