[CLOSED] Coolite Ext TabPanel Not Working

[LeeTheGreek]

Hi,

I have a coolite tabpanel enclosed within a coolite panel control. When i click on a tab, the following javascript error occurs: Microsoft JScript runtime error: 'disabled' is null or not an object. Any help to resolve this problem would be much appreciated.

Many Thanks

Lee

<ext:Panel ID="_panel1" runat="server" Frame="true" Border="true" Height="420" Collapsible="true" AllowDomMove="true">
    <Content>
        <ext:TabPanel ID="_tabPanel1" runat="server" AutoHeight="true" Border="true" AutoWidth="true" EnableTabScroll="true" StyleSpec="padding-top:1px;">
            <Items>
                <ext:Panel  
                    ID="_tab1"
                    runat="server" 
                    Title="Tab1">
                </ext:Panel>
                <ext:Panel  
                    ID="_tab2"
                    runat="server" 
                    Title="Tab2">
                </ext:Panel>
                <ext:Panel 
                    ID="_tab3" 
                    runat="server" 
                    Title="Tab3">
                </ext:Panel>
            </Items>
        </ext:TabPanel>
    </Content>
</ext:Panel>