Dim sb As New System.Text.StringBuilder()
        sb.Append("if (typeof(Page_ClientValidate) == 'function') { ")
        sb.Append("if (Page_ClientValidate() == false) { return false; }} ")
        sb.Append("this.value = 'Please Wait...';")
        sb.Append("this.disabled = true;")
        sb.Append(Me.Page.GetPostBackEventReference(Me.btnSubmit))
        sb.Append(";")
        btnSubmit.Attributes.Add("onclick", sb.ToString())

    Protected Sub setFieldFocus(ByVal ctrl As System.Web.UI.Control)
        Dim s As String = "<SCRIPT language='javascript'>document.getElementById('" + ctrl.ClientID + "').focus() </SCRIPT>"
        ClientScript.RegisterStartupScript(Me.GetType, "focus", s)
    End Sub

     Protected Sub Page_Load(ByVal sender As Object, ByVal e As System.EventArgs) Handles Me.Load
        If Not Page.IsPostBack Then
            BindData()
        End If
        setFieldFocus(txtSpecies)
    End Sub

      <httpModules>
        <!-- Remove unnecessary Http Modules for faster pipeline -->
        <remove name="Session" />
        <remove name="WindowsAuthentication" />
        <remove name="PassportAuthentication" />
        <remove name="AnonymousIdentification" />
        <remove name="UrlAuthorization" />
        <remove name="FileAuthorization" />
      </httpModules>

Sub Submit_OnClick(sender as Object, e as EventArgs)
  If MyCustomMethod (txtUserName.Text, txtPassword.Text) Then    
      FormsAuthentication.RedirectFromLoginPage (txtUserName.Text, False)
  Else
      ' Invalid credentials supplied, display message
      lblMessage.Text = "Invalid login credentials"
  End If
End Sub

<configuration>
	<system.web>
		<authentication mode="Forms" >
			<forms loginUrl="login.aspx" name=".ASPNETAUTH" protection="None" path="/" timeout="20" >
			</forms>
		</authentication>
<!-- This section denies access to all files in this application except for those that you have not explicitly specified by using another setting. -->
		<authorization>
			<deny users="?" /> 
		</authorization>
	</system.web>
<!-- This section gives the unauthenticated user access to the Default1.aspx page only. It is located in the same folder as this configuration file. -->
		<location path="default1.aspx">
		<system.web>
		<authorization>
			<allow users ="*" />
		</authorization>
		</system.web>
		</location>
<!-- This section gives the unauthenticated user access to all of the files that are stored in the Subdir1 folder.  -->
		<location path="subdir1">
		<system.web>
		<authorization>
			<allow users ="*" />
		</authorization>
		</system.web>
		</location>
</configuration>

<input id="GetLocation" type="button" onclick="getLocation(<%=tbStreet.clientID %>.value + ' ' + <%=tbCity.clientID %>.value + ' ' + <%=tbState.clientID %>.value + ' ' + <%=tbZip.clientID %>.value,'<%=lblLocation.clientID %>');" value="Get Location" />