filter:fliph should work in IE4-8, even without the -ms- prefix (which was only needed for early beta versions of IE8). You should probably add filter:fliph() parentheses as this demo . You can also try the new IE5.5-9 syntax - filter: DXImageTransform.Microsoft.BasicImage(rotation=2, mirror=1) (as MSDN recommends).
Older versions of IE required that an element have a layout for applying filters to it (how to describe an element with a layout), but AFAIK, IE8 does not require it.
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