Microsoft JScript runtime error: Object doesn't support this property or method

[georges]

i am getting this error above

@using Telerik.Web.Mvc.UI;
@using GDOT.TPRO.RazorUI;
<script src="../../../../Scripts/MicrosoftAjax.js" type="text/javascript"></script>
<script src="../../../../Scripts/MicrosoftMvcAjax.js" type="text/javascript"></script>
@{
    ViewBag.Title = "Edit New Project";
    Layout = "~/Views/Shared/Master.cshtml";
}
@Html.BeginForm()
<div id="PageTitle">@CommonStrings.EditNewProject</div>
<div id="HigherBar">
    <hr color="#000000" />
</div>
<div id="EAProjectBlock">
    <span id="ProjectIdLabel">Project ID:</span> <span id="ProjectIddata"></span>
</div>

<div id="FirstMenuBlock">
    @(
        Html.Telerik().PanelBar()
               .Name("PanelBar")
               .HtmlAttributes(new { style = "width:900px;text-align:left;margin-top:120px" })
               .Items(panelbar =>
               {
                       panelbar.Add()
                       .Text("GENERAL")
                       .LoadContentFrom("GeneralTabView", "Project")
                       .Expanded(true);

                     panelbar.Add()
                     .Text("FUNDS")
                 
                     .Expanded(false);
               })
            
    )
</div>
@{ Html.EndForm(); }

 

 

 

what am i missing?the ones below are included ,am i missing any to include with my

 

 ComboBox?

 

 

 

 

 

 

<script type="text/javascript" src="/Scripts/jquery-1.4.3.min.js"></script>
<script type="text/javascript" src="/Scripts/telerik.common.min.js"></script>
<script type="text/javascript" src="/Scripts/telerik.panelbar.min.js"></script>
<script type="text/javascript" src="/Scripts/telerik.menu.min.js"></script>

thanks