PreventDefault Not Working for NavBox

I am trying to prevent the mousedown/mouseup events on the navBox from firing but it doesn't seem to be working. When you click on the navBox it still expands/contracts. What am I missing?

<b:navBox width="200px" open="false">
   <e:handler event="mousedown" type="text/javascript">
        event.preventDefault();
   </e:handler>
   <e:handler event="mouseup" type="text/javascript">
        event.preventDefault();
   </e:handler>
   <p>Now is the time for all good men to come to the aid of their country</p>
</b:navBox>

Thanks,
Chris

Re: preventDefault Not Working for NavBox

>What am I missing?

You are missing an expected piece of the control's basic functionality.

I entered issue into our tracking system.

No Luck

Just tested that in the Backbase Explorer and the navBox still opened. I also tried the code below with no luck. Any other thoughts?

<b:navBox width="200px" open="false">
   <e:handler event="click" type="text/javascript">
        event.stopImmediatePropagation();
   </e:handler>
   <e:handler event="keydown" type="text/javascript">
        event.stopImmediatePropagation();
   </e:handler>
   <e:handler event="mousedown" type="text/javascript">
        event.stopImmediatePropagation();
   </e:handler>
   <e:handler event="mouseup" type="text/javascript">
        event.stopImmediatePropagation();
   </e:handler>
   <e:handler event="focus" type="text/javascript">
        event.stopImmediatePropagation();
   </e:handler>
   <p>Now is the time for all good men to come to the aid of their country</p>
</b:navBox>

Re: Any other thoughts?

Yes, I figured out the problem. Unfortunately there is no workaround I can offer you now.

Sergey/