Javascript not work in partial view mvc.ext.net

[theblackcat_2902]

Hi,
I have a problem with ext.net MVC
My controllers:

//User control Insert Chapter
        public ActionResult uc_InsertChapter(string containerId)
        {
            Ext.Net.MVC.PartialViewResult pr = new Ext.Net.MVC.PartialViewResult();
            pr.SingleControl = true;
            pr.WrapByScriptTag = false;
            return pr;
        }

and user control:

<script language="javascript" type="text/javascript">
     function btn_CancelChapterClick() {
         window.InsertChapter_UC_wdow_InsertChapter.hide();
         clear();
     }

     var success = function (form, action) {
         eval(action.result.script);
     };

     //clear value in form
     function clear() {
         window.InsertChapter_UC_txt_ChapterTitle.setValue('');
         window.InsertChapter_UC_txt_ChapterDescription.setValue('');
         window.InsertChapter_UC_cbx_ChapterPublished.setValue(false);
     }

     //when hide window
     function wdow_InsertChapterHide() {
         window.InsertChapter_UC_wdow_InsertChapter.hide();
         clear();
     }
    </script>
<ext:Window runat="server" ID="wdow_InsertChapter" Width="500" Height="250"
    Frame="true" Resizable="false" Title="Thêm Chapter" Modal="true">
    <Items>
        <ext:FormPanel ID="fpnel_InsertChapter" runat="server" Layout="Form" Width="486"
            Height="220" MonitorValid="true" Frame="true" MonitorResize="true" LabelAlign="Left"
            ButtonAlign="Right" LabelSeparator=" " Url="/ICDManagement/Insert_ICDChapter">
            <Items>
                <ext:TextArea ID="txt_ChapterTitle" runat="server" FieldLabel="<%$Resources:Resource,ICDInsertICDCodetxtCodeTitle %>"
                    AnchorHorizontal="90%" MaxLength="500" EmptyText="<%$Resources:Resource,ICDWindowCodeTitle %>"
                    AllowBlank="false" MsgTarget="Side" BlankText="<%$Resources:Resource,ICDWindowCodeTitle %>">
                </ext:TextArea>
                <ext:TextArea ID="txt_ChapterDescription" runat="server" FieldLabel="<%$Resources:Resource,ICDGridDescription %>"
                    MaxLength="4000" AnchorHorizontal="90%">
                </ext:TextArea>
                <ext:Checkbox ID="cbx_ChapterPublished" runat="server" FieldLabel="<%$Resources:Resource,ICDGridPublished %>"
                    AnchorHorizontal="90%">
                </ext:Checkbox>
            </Items>
            <Listeners>
                <ClientValidation Handler="#{btn_SubmitChapter}.setDisabled(!valid);" />
            </Listeners>
        </ext:FormPanel>
    </Items>
    <Buttons>
        <ext:Button ID="btn_CancelChapter" runat="server" Text="<%$Resources:Resource,ICDInsertICDCodebtnCancel %>"
            Icon="Cancel">
            <Listeners>
                <Click Handler="btn_CancelChapterClick()" />
            </Listeners>
        </ext:Button>
        <ext:Button ID="btn_SubmitChapter" runat="server" Text="<%$Resources:Resource,ICDInsertICDCodebtnSubmit %>"
            Icon="Accept">
            <Listeners>
                <Click Handler="#{InsertChapter_UC_fpnel_InsertChapter}.form.submit({ waitMsg : 'Sending...', success : success });" />
            </Listeners>
        </ext:Button>
    </Buttons>
    <Listeners>
        <Hide Handler="wdow_InsertChapterHide();" />
    </Listeners>
</ext:Window>

when I click button cancel to call btn_CancelChapterClick function. It is not work.
I need some advice.
Thanks.