In the examples, there is this code:

                <ext:Panel ID="ParentPanel" runat="server" Title="Deferred Loading of Internal Panels">
                    <Items>
                        <ext:Panel 
                            ID="InnerPanel1" 
                            runat="server" 
                            Title="Panel" 
                            Height="150">
                             <%--TriggerControl can be js function also--%>
                             <AutoLoad Url="Child.aspx" Mode="IFrame" ShowMask="true" TriggerControl="#{ParentPanel}" TriggerEvent="Activate" />
                        </ext:Panel>
                    </Items>
                </ext:Panel>
I've tried using a js function, but apparently i don't know what i'm doing. I want to look at some control properties to decide whether to reload the Panel - something like this:

function refreshGrid() 
{
                if(#{DetailForm}.record.get('ID') !=  #{HiddenField}.value)return true;
}