I am trying to use the eo_CancelBubble(event) method to close a flyout.

<eo:Flyout ID="Flyout1" runat="server" For="f1" ExpandDirection="TopRight" >
<ContentTemplate>
<div onclick="eo_CancelBubble(event);">
<div class="popupPhoto shadowBox">
<asp:Image ID="fImage1" runat="server" ImageUrl="/events/201011-guardians-freedom/guardians-of-freedom01.jpg" />
</div>
</div>
</ContentTemplate>
</eo:Flyout>
When I click the flyout, nothing happens, the flyout remains. Also, where can I find documentation on the use of eo_CancelBubble(event) and other methods.

Thanks,
John