Getting a "web service is undefined" error when making JavaScript call to a web service.

$(function()
{
    $("a").click(function()
    {
        window.onbeforeunload = null;
    });

//    $("input").click(function()
//    {
//        window.onbeforeunload = null;
//    });
});

function confirmExit() 
{
    return "\r\n                                                                                 YOU HAVE NOT LOG OFF CORRECTLY.\r\nPLEASE\ CLICK THE CANCEL BUTTON BELOW AND THEN LOG OFF BY CLICKING THE LOG OFF LINK IN THE PANEL ON THE LEFT OF THE SCREEN.\r\n";
}

function checkspell() 
{
    try 
    {
        var ieSpell = new ActiveXObject('ieSpell.ieSpellExtension');
        ieSpell.CheckAllLinkedDocuments(document);
    }
    catch (exception) 
    {
        if (exception == '[object Error]') 
        {
            document.write("The ieSpell spellchecker is not installed on your computer.  <strong>Call the IT help desk at 817-7200 and ")
            document.write("someone will help you install it.</strong> If you have not saved your changes click ")
            document.write("<a href= 'javascript:history.back()'>here</a> to return to the previous page.")
        }
        else 
        {
            document.write(exception)
        }
    }
}

var Message = ""
var MessageTitle
function YouAre() 
{
    if (MessageTitle == "You Are") 
    {
        $('div#divHelp').dialog("open")
    }
    else 
    {
            $get("ctl00_UpdateProgressButton").style.display = "block";
            $get("ctl00_UpdateProgressButton").style.visibility = "visible";
            $('div#divHelp').dialog("close")
            HelpService.YouAre(YouAreCallBack);
            var t = setTimeout("SetHelpDialog(100,200)", 2000);
    }
}

function YouAreCallBack(result) 
{
    if (result.substring(0,5) == "Error")
    {
        divHelp.title = result.substring(0, 5);
        MessageTitle = "Error";
    }
    else
    {
        divHelp.title = "You Are";
        MessageTitle = "You Are";
    }
        Message = result;
}

function SetHelpDialog(x, y) 
{
    divHelp.innerHTML = Message;
    
    $('div#divHelp').dialog({
        height: "auto",
        modal: true,
        overlay: { background: '#fff', opacity: '0.7'}
    });
    HelpDialog = $('div#divHelp');
    
    var TopDialogPadding = HelpDialog.parent().find('div.ui-dialog-content').css('padding-top').replace("px", "");
    var BottomDialogPadding = HelpDialog.parent().find('div.ui-dialog-content').css('padding-bottom').replace("px", "");
    var DialogPadding = (parseInt(TopDialogPadding) + parseInt(BottomDialogPadding));
    
    var TitleBarHeight = HelpDialog.parent().find('div.ui-dialog-titlebar').css('height').replace("px", "");
    
    var DialogTopMargin = parseInt($('div.ui-dialog').css("margin-top").replace("px", ""));
    var DialogBottomMargin = parseInt($('div.ui-dialog').css("margin-bottom").replace("px", ""));
    var DialogMargins = DialogTopMargin + DialogBottomMargin;
    
    var AdjustedContentHeight = $('#divMainContent').outerHeight() - DialogPadding - TitleBarHeight - DialogMargins;
    HelpDialog.css("max-height", (AdjustedContentHeight) + "px"); 
   
    var SideBarWidth = $('#divSideBar').outerWidth();
    var ContentWidth = $('#divMainContent').outerWidth();
    var HelpDialogWidth = HelpDialog.outerWidth();
    var xPosition = SideBarWidth + ((ContentWidth - HelpDialogWidth) / 2);
    
    var HeadersHeight = $('#divHeaderOne').outerHeight() + $('#divMenu').outerHeight() + $('#divHeaderTwo').outerHeight();
    var HelpDialogHeight = HelpDialog.outerHeight();
    var yPosition = HeadersHeight + (AdjustedContentHeight - HelpDialogHeight + DialogPadding) / 2;
    HelpDialog.dialog('option', 'position', [xPosition, yPosition]);
    if (yPosition == HeadersHeight)
    {
        HelpDialog.css("overflow", "scroll");
        HelpDialog.css("overflow-x", "hidden");
    }
    
    var divHelpInner = $("#divHelp > div");
    divHelpInner.css("float", "left");
    divHelpInner.css("width", divHelpInner.width());
    divHelpInner.css("float", "none");
    divHelpInner.css("text-align", "left");
    $get("ctl00_UpdateProgressButton").style.display = "none";
    alert(  "HeadersHeight = " + HeadersHeight +
            "\r\nAdjustedContentHeight = " + AdjustedContentHeight +
            "\r\nHelpDialogHeight = " + HelpDialogHeight + 
            "\r\nyPosition = " + yPosition +
            "\r\nContentHeight = " + $('#divMainContent').outerHeight() +
            "\r\nMax Height = " + HelpDialog.css("max-height") +
            "\r\nInner Div Height = " + divHelpInner.outerWidth());
}

<%@ Master Language="VB" CodeFile="ClientTrack.master.vb" Inherits="ClientTrack" %>

<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">

<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
    <title>Site Master Page</title>
    <asp:ContentPlaceHolder id="head" runat="server"></asp:ContentPlaceHolder>
   
    <link href="~/Styles/Master.css" rel="stylesheet" type="text/css" />
    <link href="~/Styles/Dialog.css" rel="stylesheet" type="text/css" />

    <script src="/WebApps/ClientTrack3.5/js/jquery/jquery-1.4.2.js" type="text/javascript"></script>    
    <script src="/WebApps/ClientTrack3.5/js/jquery/jquery-1.4.2-vsdoc.js" type="text/javascript"></script>
    <script src="/WebApps/ClientTrack3.5/js/jquery/jQueryUI.js" type="text/javascript"></script>
    <script src="/WebApps/ClientTrack3.5/js/Master.js" type="text/javascript"></script>  
    <script type="text/javascript">
        window.onbeforeunload = confirmExit;
    </script>
    
</head>
<body>
    <form id="form1" runat="server">
        <asp:ScriptManager ID="ScriptManager1" runat="server">
            <Services>
                <asp:ServiceReference Path="~/WebServices/HelpService.asmx" />
            </Services>
        </asp:ScriptManager>
        <div id="divPageWrapper">
            <div id="divHeaderOne">
                <asp:Image runat="server" ID="HeaderImage" CssClass="HeaderOneImage" ImageUrl="~/Images/MasterHeader.gif"
                    AlternateText="Logo" />
            </div>
            <div id="divMenu">
                <asp:Menu CssClass="MainMenu" ID="MasterMenu" runat="server" DataSourceID="SiteMapDataSource1"
                    Orientation="Horizontal" StaticEnableDefaultPopOutImage="False">
                    <StaticSelectedStyle CssClass="StaticSelectedStyle" />
                    <StaticMenuItemStyle CssClass="StaticMenuItemStyle" ItemSpacing="0px" />
                    <StaticHoverStyle CssClass="StaticHoverStyle" />
                    <DynamicMenuStyle CssClass="DynamicMenuStyle" />
                    <DynamicMenuItemStyle CssClass="DynamicMenuItemStyle" />
                    <DynamicHoverStyle CssClass="DynamicHoverStyle" />
                </asp:Menu>
            </div>
            <div id="divHeaderTwo">
                <asp:Label ID="lblFormTitle" runat="server" Text="FormTitle"></asp:Label>
            </div>
            <div id="divHeaderThree">
                <asp:UpdatePanel ID="UpdatePanelDDL" runat="server">
                    <ContentTemplate>
                        Records For
                        <asp:DropDownList ID="ddlRecordsFor" runat="server" Width="150px" CssClass="RecordsFor" AutoPostBack="True">
                            <asp:ListItem>1</asp:ListItem>
                            <asp:ListItem>2</asp:ListItem>
                            <asp:ListItem>3</asp:ListItem>
                        </asp:DropDownList>
                    </ContentTemplate>
                </asp:UpdatePanel>
            </div>
            <div id="divSideBar">
                <asp:LinkButton ID="LogOff" runat="server">Log Off</asp:LinkButton>
                <a id="SpellCheck" onclick="checkspell()">Spell Check</a><br />
                <a id="YouAre" onclick="YouAre()">You Are</a>
                <asp:HyperLink ID="YouCan" runat="server">You Can</asp:HyperLink>
                <asp:HyperLink ID="WhoCan" runat="server">Who Can</asp:HyperLink>
                <asp:HyperLink ID="HowCan" runat="server">How Can</asp:HyperLink>
                <asp:UpdateProgress ID="UpdateProgressButton" runat="server">
                    <ProgressTemplate>
                        <div class="Progress">
                        </div>
                        <br />
                        <div class="PleaseWait"> Please Wait...</div>
                    </ProgressTemplate>
                </asp:UpdateProgress>
            </div>
            <div id="divMainContent">
                <asp:ContentPlaceHolder ID="cp1" runat="server">
                    Under Construction
                </asp:ContentPlaceHolder>
            </div>
            <div id="divFooter">
                <asp:UpdatePanel ID="UpdatePanelButton" runat="server">
                    <ContentTemplate>
                        <asp:Button ID="btnDivideByZero" runat="server" Text="Divide by Zero" Width="125px" />
                        <asp:Button ID="btnPageNotFound" runat="server" Text="Page Not Found" Width="133px" />
                        <asp:Button ID="btnDatabaseError" runat="server" Text="Data base Error" Width="125px" />
                    </ContentTemplate>
                </asp:UpdatePanel>
            </div>
        </div>
        <div id="divHelp" visible="false"></div>
        <asp:SiteMapDataSource ID="SiteMapDataSource1" runat="server" ShowStartingNode="False" />
    </form>
</body>
</html>


Imports System.Web
Imports System.Web.Services
Imports System.Web.Services.Protocols

<System.Web.Script.Services.ScriptService()> _
<WebService(Namespace:="http://People-Inc.org/")> _
<WebServiceBinding(ConformsTo:=WsiProfiles.BasicProfile1_1)> _
<Global.Microsoft.VisualBasic.CompilerServices.DesignerGenerated()> _
Public Class HelpService
    Inherits System.Web.Services.WebService

    <WebMethod(EnableSession:=True)> _
    Public Function YouAre() As String
       Dim CurrentUser As User = System.Web.HttpContext.Current.Session("CurrentUser")
        Try
            With CurrentUser
                Dim Title As String
                If .Title = "" Then
                    Title = "You have no title listed in Ultipro. To see more information on this topic click <a onclick=""DownLoadFile('http://Intranet/WebApps/ClientTrack3.5/Help/ClientTrackManual.pdf#ProgInfGeneral')"">here.</a>"
                Else
                    Title = .Title
                End If

                Dim JobDescription As String
                If .JobDescription = "" Then
                    JobDescription = "You have no Job Description listed in Ultipro. To see more information on this topic click <a onclick=""DownLoadFile('http://Intranet/WebApps/ClientTrack3.5/Help/ClientTrackManual.pdf#ProgInfGeneral')"">here.</a>"
                Else
                    JobDescription = .JobDescription
                End If

                Dim Supervisor As String
                If .Supervisor = "" Then
                    Supervisor = "You have no Supervisor listed in Ultipro."
                Else
                    Supervisor = .Supervisor
                End If

                Dim Programs As String
                If .Programs = "" Then
                    Programs = "There are no programs on the Program Information page for which you are listed as a staff. To see more information on this topic click <a onclick=""DownLoadFile('http://Intranet/WebApps/ClientTrack3.5/Help/ClientTrackManual.pdf#ProgInfGeneral')"">here.</a>"

                Else
                    Programs = .Programs
                End If

                Return String.Format("<u>YOU ARE:</u><br />{0} {1}<br /><br />" _
                                    & "<u>YOUR LOGIN NAME IS:</u><br />{2}<br /><br />" _
                                    & "<u>YOUR TITLE IS:</u><br />" & Title & "<br /><br />" _
                                    & "<u>YOUR JOB DESCRIPTION IS:</u><br />" & JobDescription & "<br /><br />" _
                                    & "<u>YOUR SUPERVISOR IS:</u><br />" _
                                    & "(If incorrect click " & "<a onclick=""DownLoadFile('http://Intranet/WebApps/ClientTrack3.5/Help/ClientTrackManual.pdf#ProgInfGeneral')"">here.</a>)<br />" _
                                    & "{5}<br /><br />" _
                                    & "<u>THE PROGRAM(S) YOU ARE A {6} FOR ARE:</u><br /><div >" & Programs & "</div>", _
                                    .FirstName, .LastName, _
                                    .UserName, _
                                    .Title, _
                                    .JobDescription, _
                                    .Supervisor, _
                                    .Title.ToUpper, _
                                    .Programs)
            End With
        Catch ex As Exception
            Return "Error<br />The following error has occurred in the You Are function of the Help Service Web Service<br /><br />'" & ex.Message & "'<br /><br />Copy and paste this message into an e-mail to the IT help desk or call the IT help desk and read this exact message to them."
        End Try
    End Function

End Class

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