Javascript Message Display

Javascript message box

 if (intResult == -1)
        {
            lblmsg.Text = "Email ID Already registered...Please Change.!!";
            string javaScript = "<script language=JavaScript>\n" +
                              "alert('Email ID Already registered...Please Change.!! !!');\n" +
                              "</script>";
            Page.ClientScript.RegisterStartupScript(this.GetType(), "onload", javaScript);
        }

Posted in: JAVASCRIPT