Jquery执行后台方法 Click事件页面加载时就执行？怎么能不执行

<head runat="server">
    <title>无标题页</title>
        <script type="text/javascript">
        $(document).ready(function(){
        $("#jian").click( function(){
        var $text=$("#text1").val();
        var $Add='<%=AddUser("'+$text+'")%>';        if($Add==1)
        {
        alert("ok");
        }
        else
        {
        alert("no");
        }
        });
        });
        </script></head>
<body>
    <form id="form1" runat="server">
    <div>
        <input type="button" id="jian" value="减一" />
        <input type="text" id="text1" value="1" />
        <input type="button" id="jia" value="加一" />
    </div>
    </form>
</body>
</html>CS代码
方法
 public string AddUser(string a)
    {
        //return a;
        SqlConnection Conn = new SqlConnection("server=BD-130328-305\\SQLEXPRESS;uid=sa;pwd=123;database=book");
        Conn.Open();
        SqlCommand Comm = new SqlCommand("insert into Book_Info(bookTypeID,bookName)values('" + a + "',语文)", Conn);        int i = Comm.ExecuteNonQuery();        Conn.Close();
        return i.ToString();    }