Ajax contorl toolkit is not working on framework 4.5

Hi,

I have installed ajaxtoolkit for framework 4.5 and it is not working.

I have already configured in web.config. I use vs 2013 and framework 4.5.

This is my code as below

 <ajaxToolkit:Accordion ID="AccTab" runat="Server"
                                    SelectedIndex="0"
                                    HeaderCssClass="accordionHeader"
                                    HeaderSelectedCssClass="accordionHeaderSelected"
                                    ContentCssClass="accordionContent"
                                    AutoSize="None"
                                    FadeTransitions="true"
                                    TransitionDuration="250"
                                    FramesPerSecond="40"
                                    RequireOpenedPane="false"
                                    SuppressHeaderPostbacks="true">
                                    <Panes>
                                        <ajaxToolkit:AccordionPane runat="server" ID="AccordionPane1">
                                            <Header>Number 1</Header>
                                            <Content> I am Number 1</Content>
                                        </ajaxToolkit:AccordionPane>
                                        <ajaxToolkit:AccordionPane runat="server" ID="AccordionPane2">
                                            <Header>Number 2</Header>
                                            <Content> I am Number 2</Content>
                                        </ajaxToolkit:AccordionPane>
                                         <ajaxToolkit:AccordionPane runat="server" ID="AccordionPane3">
                                            <Header>Number 3</Header>
                                            <Content> I am Number 3</Content>
                                        </ajaxToolkit:AccordionPane>
                                    </Panes>
                                    <HeaderTemplate>...</HeaderTemplate>
                                    <ContentTemplate>...</ContentTemplate>
            </ajaxToolkit:Accordion>

above the page

<%@ Register Assembly="AjaxControlToolkit" Namespace="AjaxControlToolkit" TagPrefix="ajaxToolkit" %>

in web config

 <httpRuntime targetFramework="4.5" />
    <pages>
      <namespaces>
        <add namespace="System.Web.Optimization" />
        <add namespace="Microsoft.AspNet.Identity" />
      </namespaces>
      <controls>
        <add assembly="Microsoft.AspNet.Web.Optimization.WebForms" namespace="Microsoft.AspNet.Web.Optimization.WebForms" tagPrefix="webopt" />
        <add tagPrefix="ajaxToolkit" assembly="AjaxControlToolkit" namespace="AjaxControlToolkit" /></controls>
    </pages>

Please kindly advice