Flash off by one pixel in IE9 only

I have 开发者_StackOverflowa website with a Flash banner. This has worked fine in all major browsers (IE7/8, Firefox, Chrome, Safari, Opera) for some time, but when I upgraded to IE9, the banner is displayed with a 1 pixel shim on the right-hand edge, which is throwing the layout off.

I know past versions of IE would display line breaks as white space and I wonder if that's what's going on here. I'm using the AC_FL_RunContent() function to display the Flash file. I'm not sure where to look to debug this, but I'd like to fix it sooner rather than later. Any help is appreciated.

How are you embedding your flash piece? The best way to do it is to use something like SWFObject, which should take all browser idiosyncrasies into account. It uses JavaScript to generate the embed code depending on what browser you're using. Give that a shot and it may solve your problem!

Our solution to this problem was to make the object 1 pixel wider than what we wanted, then surround it by a div of the right side with overflow hidden.

So although the problem was still occurring it was hidden.