Bubble events - catch Key in iFrame and bubble to parent?

[wagger]

Hey,
as described in this example I have made a Button that, when pressed, creates a new Tab in a TabPanel and loads a certain page in an iFrame:

<script type="text/javascript">
        var addTab = function (tabPanel, id, url, title) {
            var tab = tabPanel.getComponent(id);

            if (!tab) {
                tab = tabPanel.add({
                    id: id,
                    title: title,
                    closable: true,
                    autoLoad: {
                        showMask: true,
                        url: url,
                        mode: "iframe",
                        maskMsg: "Loading " + url + "..."
                    }
                });

            }
            tabPanel.setActiveTab(tab);
        }
    </script>

So, the "main page" has a TabPanel, and the different Tabs open different local ASPX-pages. When focus is on the "main page" I can press for example F2 and react accordingly:

in "main page" (Default.aspx):

<ext:KeyMap ID="KeyMap1" runat="server" Target="={Ext.isGecko ? Ext.getDoc() : Ext.getBody()}">
        <ext:KeyBinding>
            <Keys>
                <ext:Key Code="F2" />
            </Keys>
            <Listeners>
                <Event Handler="Ext.net.DirectMethods.Focus_Text();" />
            </Listeners>
        </ext:KeyBinding>   
        ...

and in code-behind (Default.aspx.cs):

[DirectMethod]
public void Focus_Text()
{
     TextField1.Focus();
}

PRessing F2 when focus IS NOT ON any of the iFrames (the Tabs in the TabPanel) works as expected, the TextField gets focus. But if I am in the iFrame there is two problems:

1) First, the KeyMap isnt active in that iframe since it is a Page on its own
To solve this, I can add the same KeyMap to the iFrame-pages.
But, then the second problems shows its ugly face ;-)

2) When I catch the key press in the iFrame-page, I want as usual to shift focus to the TextField that is placed in Default

How can I do that? Can I bubble the keypress back to Default.aspx somehow or can I directly frm the iFrame-page set focus to the TextField on the Default.aspx?

Thx =)

UPDATE - THE 'NAME' ATTRIBUTE MUST BE SET ON THE CONTROL
So, after messing about with this I realized that on the TextField I need to set the "name" attribute in order to be able to search for the element:

<ext:TextField ID="TextField1" Name="SearchBox" ItemID="SearchBox" runat="server"></ext:TextField>

I actually set both ItemId and Name to be sure. Using this, I can access the TextField1 this way (from my iFrame aspx-page):

<Event Handler="parent.document.getElementsByName('SearchBox').item(0).value='argh'" />