Using a background image on a flot diagram/excanvas in IE - image

I'm trying to use the excanvas/JQuery based "Flot" plugin but would like to use a background image. At the moment however there is a bug that means it's not possible to set a background image to the canvas using CSS - the bug is described here and here.
Has anyone managed to get around this bug? It's incredibly frustrating as using CSS to provide a background image to a canvas appears to be valid in every other browser; but not using IE and excanvas!
Any help would be appreciated! I've tried nested divs and more - and I'm running out of ideas!
Thanks in advance
Edit:
There's a possible workaround here - http://code.google.com/p/flot/issues/detail?id=129 - but it seems a bit outdated as a lot of the flot code isn't the same anymore. I guess it does give me something to start with however! If anybody has an easier solution I'd be happy to hear it!

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