Hello,
I have a page with a basic modal popup. The code is as follows:
<%@ Page Title="" Language="VB" MasterPageFile="~/re.master" AutoEventWireup="false" CodeFile="addproperty.aspx.vb" Inherits="Register_default" %><%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajaxToolkit" %><asp:Content ID="Content1" ContentPlaceHolderID="head" Runat="Server"><title>Admin - Add Property</title><style>
.modalBackground{
background-color:black;
filter:alpha(opacity=90) !important;
opacity:0.6 !important;
z-index:20;
}
.modalpopup{
padding:30px 10px 30px 10px;
position:relative;
width:550px;
height:100px;
background-color:white;
border:1px solid black;
}</style></asp:Content><asp:Content ID="Content2" ContentPlaceHolderID="ContentPlaceHolder1" Runat="Server"><!--============================== slider =================================--><div class="row_6"><div class="container"><div class="row"><div class="span8"><h2>Add Property</h2><div id="contact-form" class="contact-form"><div><asp:Label ID="lblMessage" runat="server" Font-Bold="true" Text=""></asp:Label></div><fieldset><div class="coll-1"><p>Address*</p><label class="address"><asp:TextBox ID="txtAddress" runat="server" MaxLength="100"></asp:TextBox><br /><span id="emptyaddress" runat="server" style="color:#f00; font-size:10px; line-height:1.2em; text-align:right; overflow:hidden; width:100%; text-transform:none; position:relative; left:650px; display:none;">*This field is required.</span></label></div><div class="coll-2"><p>City / State*</p><label class="city"><asp:TextBox ID="txtCity" runat="server" MaxLength="100"></asp:TextBox> <asp:DropDownList ID="ddlState" runat="server"></asp:DropDownList><br /><span id="emptycity" runat="server" style="color:#f00; font-size:10px; line-height:1.2em; text-align:right; overflow:hidden; width:100%; text-transform:none; position:relative; left:650px; display:none;">*This field is required.</span></label></div><div class="coll-3"><p>Zip Code*</p><label class="zipcode"><asp:TextBox ID="txtZipCode" runat="server" MaxLength="10"></asp:TextBox><br /><span id="emptyzip" runat="server" style="color:#f00; font-size:10px; line-height:1.2em; text-align:right; overflow:hidden; width:100%; text-transform:none; position:relative; left:650px; display:none;">*This field is required.</span></label></div><div class="clear"></div><div class="coll-1"><p>Status*</p><label class="status"><asp:DropDownList ID="ddlStatus" runat="server"></asp:DropDownList></label></div><div class="clear"></div><div><p>Description</p><label class="description"><asp:TextBox ID="txtDescription" TextMode="MultiLine" runat="server"></asp:TextBox> </label></div><div class="clear"></div><div class="buttons-wrapper clearfix"><asp:LinkButton ID="lbSave" Class="btn link2" data-type="submit" runat="server">Save Property</asp:LinkButton><span>*required fields</span></div></fieldset></div></div><div class="span4"><h2>Menu</h2><ul class="list2 clearfix"><% ShowAdminSubMenu(Session("AccountTypeID")) %></ul></div></div></div> </div><asp:Button ID="Button1" runat="server" style="display:none" Text="" /><asp:Panel ID="Panel1" runat="server" CssClass="modalpopup"><asp:Label ID="lblmodalMsg" runat="server" Text=""></asp:Label><div style="width:100%; text-align:center"><asp:LinkButton ID="LinkButton2" Class="btn link2" data-type="submit" runat="server">Create Another Work Order</asp:LinkButton><asp:LinkButton ID="LinkButton3" Class="btn link2" data-type="submit" runat="server">Return to Work Orders</asp:LinkButton></div></asp:Panel><ajaxToolkit:ModalPopupExtender ID="ModalPopupExtender1" runat="server" PopupControlID="Panel1" TargetControlID="Button1" BackgroundCssClass="modalBackground"></ajaxToolkit:ModalPopupExtender></asp:Content>This code had been working fine for months, however, I recently moved the site to a new host and now the modal popup appears at the bottom of the page. See below. 
The host claims they support AJAX and have verified for me that AJAX is "enabled" on the server, but clearly there's something different between the 2 hosts? When I transferred my site, they did force me to comment out a number of lines in the web.config file. The web.config now looks like the following:
<?xml version="1.0"?><configuration><configSections><sectionGroup name="system.web.extensions" type="System.Web.Configuration.SystemWebExtensionsSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"><sectionGroup name="scripting" type="System.Web.Configuration.ScriptingSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"><!--<section name="scriptResourceHandler" type="System.Web.Configuration.ScriptingScriptResourceHandlerSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication"/>--><sectionGroup name="webServices" type="System.Web.Configuration.ScriptingWebServicesSectionGroup, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"><!--<section name="jsonSerialization" type="System.Web.Configuration.ScriptingJsonSerializationSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="Everywhere" />--><!--<section name="profileService" type="System.Web.Configuration.ScriptingProfileServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication" />--><!--<section name="authenticationService" type="System.Web.Configuration.ScriptingAuthenticationServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication" />--><!--<section name="roleService" type="System.Web.Configuration.ScriptingRoleServiceSection, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" requirePermission="false" allowDefinition="MachineToApplication" />--></sectionGroup></sectionGroup></sectionGroup></configSections><appSettings/><connectionStrings><clear/><add name="strDBConnection" connectionString="Data Source=db123456.db.1and1.com; Initial Catalog=db9876543; User ID=dboTEST; Password=SORRY!"/></connectionStrings><system.web><httpRuntime maxRequestLength="1048576" executionTimeout="3600" /><!--
Visual Basic options:
Set strict="true" to disallow all data type conversions
where data loss can occur.
Set explicit="true" to force declaration of all variables.
--><compilation debug="true" strict="false" explicit="true"><assemblies><add assembly="System.Core, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/><add assembly="System.Data.DataSetExtensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/><add assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/><add assembly="System.Xml.Linq, Version=3.5.0.0, Culture=neutral, PublicKeyToken=B77A5C561934E089"/></assemblies></compilation><!--
The <authentication> section enables configuration
of the security authentication mode used by
ASP.NET to identify an incoming user.
--><authentication mode="Windows" /><customErrors mode="Off"/> <!--
The <customErrors> section enables configuration
of what to do if/when an unhandled error occurs
during the execution of a request. Specifically,
it enables developers to configure html error pages
to be displayed in place of a error stack trace.<customErrors mode="RemoteOnly" defaultRedirect="GenericErrorPage.htm"><error statusCode="403" redirect="NoAccess.htm" /><error statusCode="404" redirect="FileNotFound.htm" /></customErrors>
--><pages><namespaces><clear /><add namespace="System" /><add namespace="System.Collections" /><add namespace="System.Collections.Generic" /><add namespace="System.Collections.Specialized" /><add namespace="System.Configuration" /><add namespace="System.Text" /><add namespace="System.Text.RegularExpressions" /><add namespace="System.Linq" /><add namespace="System.Xml.Linq" /><add namespace="System.Web" /><add namespace="System.Web.Caching" /><add namespace="System.Web.SessionState" /><add namespace="System.Web.Security" /><add namespace="System.Web.Profile" /><add namespace="System.Web.UI" /><add namespace="System.Web.UI.WebControls" /><add namespace="System.Web.UI.WebControls.WebParts" /><add namespace="System.Web.UI.HtmlControls" /></namespaces><controls><add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/><add tagPrefix="asp" namespace="System.Web.UI.WebControls" assembly="System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/><!--<add tagPrefix="asp" namespace="System.Web.UI" assembly="System.Web.Extensions, Version=1.0.61025.0, Culture=neutral, PublicKeyToken=31bf3856ad364e35"/>--><add namespace="AjaxControlToolkit" assembly="AjaxControlToolkit" tagPrefix="ajaxToolkit"/></controls></pages><httpHandlers><remove verb="*" path="*.asmx"/><add verb="*" path="*.asmx" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/><add verb="*" path="*_AppService.axd" validate="false" type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/><add verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" validate="false"/></httpHandlers><httpModules><add name="ScriptModule" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/></httpModules></system.web><system.codedom><compilers><compiler language="c#;cs;csharp" extension=".cs" warningLevel="4"
type="Microsoft.CSharp.CSharpCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"><providerOption name="CompilerVersion" value="v3.5"/><providerOption name="WarnAsError" value="false"/></compiler><compiler language="vb;vbs;visualbasic;vbscript" extension=".vb" warningLevel="4"
type="Microsoft.VisualBasic.VBCodeProvider, System, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b77a5c561934e089"><providerOption name="CompilerVersion" value="v3.5"/><providerOption name="OptionInfer" value="true"/><providerOption name="WarnAsError" value="false"/></compiler></compilers></system.codedom><!--
The system.webServer section is required for running ASP.NET AJAX under Internet
Information Services 7.0. It is not necessary for previous version of IIS.
--><system.webServer><security><requestFiltering><requestLimits maxAllowedContentLength="1073741824" /></requestFiltering></security><validation validateIntegratedModeConfiguration="false"/><modules><remove name="ScriptModule" /><add name="ScriptModule" preCondition="managedHandler" type="System.Web.Handlers.ScriptModule, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/></modules><handlers><remove name="WebServiceHandlerFactory-Integrated"/><remove name="ScriptHandlerFactory" /><remove name="ScriptHandlerFactoryAppServices" /><remove name="ScriptResource" /><add name="ScriptHandlerFactory" verb="*" path="*.asmx" preCondition="integratedMode"
type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/><add name="ScriptHandlerFactoryAppServices" verb="*" path="*_AppService.axd" preCondition="integratedMode"
type="System.Web.Script.Services.ScriptHandlerFactory, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35"/><add name="ScriptResource" preCondition="integratedMode" verb="GET,HEAD" path="ScriptResource.axd" type="System.Web.Handlers.ScriptResourceHandler, System.Web.Extensions, Version=3.5.0.0, Culture=neutral, PublicKeyToken=31BF3856AD364E35" /></handlers><staticContent><remove fileExtension=".woff" /><mimeMap fileExtension=".woff" mimeType="application/font-woff" /></staticContent><defaultDocument enabled="true"><files><clear/><add value="default.aspx" /><add value="index.aspx" /><add value="index.html" /></files></defaultDocument></system.webServer><runtime><assemblyBinding appliesTo="v2.0.50727" xmlns="urn:schemas-microsoft-com:asm.v1"><dependentAssembly><assemblyIdentity name="System.Web.Extensions" publicKeyToken="31bf3856ad364e35"/><bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/></dependentAssembly><dependentAssembly><assemblyIdentity name="System.Web.Extensions.Design" publicKeyToken="31bf3856ad364e35"/><bindingRedirect oldVersion="1.0.0.0-1.1.0.0" newVersion="3.5.0.0"/></dependentAssembly></assemblyBinding></runtime></configuration>Any help you can provide as to why AJAX is not working is greatly appreciated!