Okay this is what I have now and everything seems to be working except for the menus. They just wont become visible. Please help.

protected void Calendar1_SelectionChanged1(object sender, EventArgs e)
    {
        if (MnuLeft.Visible == false && MnuRight.Visible == false)
        {
            MnuLeft.Visible = true;
            MnuRight.Visible = true;
        }
        DateTime date = Calendar1.SelectedDate;
        Session["dete"] = date;
        Session["Forum"] = "News";
        Response.Redirect("Default.aspx", true);
        
        
        
    }

    protected void Page_Load(object sender, EventArgs e)
    {
        
    }