javascript alert message

Thus can you show me what I can do to get the javascript alert message at the level I need it to be at?

Thus can you tell me what level the javascript alert message can be accessed from the code listed below?

Here is the code I am referring to:

In a vb.net 2010 web form application, I have the following code:
<%@ Page Title="" Language="VB" MasterPageFile="~/MasterPage.master" AutoEventWireup="false" CodeFile="default.aspx.vb" Inherits="attendanceletters_default" %>
<%@ Register Assembly="Telerik.Web.UI" Namespace="Telerik.Web.UI" TagPrefix="telerik" %>
<asp:Content ID="Content1" ContentPlaceHolderID="MPHead" Runat="Server">
<script src="../scripts/jquery-1.3.2.js" type="text/javascript"></script>
<script src="../scripts/jquery-ui-1.7.2.custom.min.js" type="text/javascript"></script>
<%If (False) Then%>
<script src="../scripts/jquery-1.3.2.js" type="text/javascript"></script>
<% End If%>
<script src="../scripts/site.js" type="text/javascript"></script>
<script src="../scripts/json2.js" type="text/javascript"></script>
function GetStudentLetterTemplate(schoolyear, schoolnum, milestone, studentlink, language, semester) {
alert('schoolyear: ' + schoolyear + 'schoolnum: ' + schoolnum + 'milestone: ' + milestone + 'studentlink: ' + studentlink + 'language: ' + language + 'semester: ' + semester);
if (milestone == '999') {
alert('You have selected student(s) having more than one CAIP entry for the current school year');
return;
}
}