[SOLVED] swf in sidebar extends past page width except in IE8

Hi all,
firstly thanks to the Atahualpa team for all of the development that has made it one of the best, easily customised templates available.
I'm a big fan, and I've just accidentally discovered, not a bug with Atahualpa, but a bug of sorts with IE8. I have used Kimili Flash Embed to embed a swf file in my outside right sidebar (within a text widget). When testing (just to see if it would work), I inserted the flash at full size. To my very happy surprise, not only did it embed and play correctly, but it displayed outside the set 940px page width (that I'd set in the theme options).
I intended to either make the sidebar wider to accommodate it (and that would bring the swf into the page), or reduce the size of the swf so it fitted in the sidebar, but it looks really fantastic extending outside the normal page width in this instance (in FF and Chrome, but not in IE8).
In IE8 the swf is chopped off at the widget edge (inside the page width).
Would anyone know how I can get IE8 to treat the page width in the same way FF and Chrome do?

The swf plays perfectly anywhere else within a page, but it just looks great when it extends outside of the "page", so if I can overcome the IE8 problem it would be really great.

Any advice would be greatly appreciated.