Animation, fadeing divs

Vendt bare et par timer med at bruge meget tid på det, havde overset at der var en animation controller i ajax toolboxen, troede bare det var nogle references scripts andre controls brugte. Så giver det lige et forsøg selv.

Jeg fandt dette. http://dotnetforum.dk/blogs/fasttrackdeveloper/archive/2007/12/10/79865.aspx

Men når jeg adder
      <asp:ScriptReference Assembly="Microsoft.Web.Preview" Name="PreviewScript.js" />
            <asp:ScriptReference Assembly="Microsoft.Web.Preview" Name="PreviewDragDrop.js" />

til min script manager, så får jeg af vide at Microsoft.Web.Preview ikke findes.

<script type="text/javascript">
   
  function MenuCollapse(Size)
  {
        var controller = document.getElementById("Controller");
        var SeqAnimation = AjaxControlToolkit.Animation.SequenceAnimation(controller);
        for (var x = 0; x < Size; x++)
        {
        var panel = document.getElementById("_MenuEntry"+x);
        var ani = AjaxControlToolkit.Animation.ResizeAnimation(panel, .4, 25, 0, 0, "px");
        SeqAnimation.add(ani)
        }
        SeqAnimation.play();
  }
</script>

Jeg får en error, nogen der kan gennemskue hva jeg har gjort galt?

this.set_target is not a function    (linie 366)
Animation(div#_MenuEntry0.MenuMain-nav-inner, 0.4, 25)
createCallback(Object __namespace=true, [div#_MenuEntry0.MenuMain-nav-inner, 0.4, 25])
ParentAnimation(div#_MenuEntry0.MenuMain-nav-inner, 0.4, 25, null)
createCallback(Object __namespace=true, [div#_MenuEntry0.MenuMain-nav-inner, 0.4, 25, 1 more...])
ParallelAnimation(div#_MenuEntry0.MenuMain-nav-inner, 0.4, 25, null)
createCallback(Object __namespace=true, [div#_MenuEntry0.MenuMain-nav-inner, 0.4, 25, 1 more...])
ResizeAnimation(div#_MenuEntry0.MenuMain-nav-inner, 0.4, 25, 0, 0, "px")
MenuCollapse(3)


Jeg har følgene refferencer i min scriptmanager,
            <asp:ScriptReference Assembly="AjaxControlToolkit" Name="AjaxControlToolkit.Animation.Animations.js" />
            <asp:ScriptReference Assembly="AjaxControlToolkit" Name="AjaxControlToolkit.Compat.Timer.Timer.js" />

Glemte new AjaxControlToolkit.Animation.ResizeAnimation(panel, .4, 25, 0, 0, "px");
new AjaxControlToolkit.Animation.SequenceAnimation(controller);