How do I read the actual height of the panel title bar (or actual total panel height)

In Flex 4.5:
I have panel which is reading panel.height as 159, however it contains a swf in a swfloader which is 400 in height so it should be more than 400.
I need to know what the actual height of the panel is so I can scaleX and scaleY it to full screen height eg. scale=screenheight/panelHeight.
I know the content container will be 400 (the size of the movie) but can't read the height of the titleBar, and the overall panel height is returning the wrong value.

Spark Panels don't clip. Maybe that's what is going on? Also check the
measuredHeight of the Panel.

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