I found this useful link which explains rotation in IE9 CSS3 transform: rotate; in IE9
unfortunately using either of these does not work
.mark.festival:hover{
-ms-transform: rotate(360deg);
transform: rotate(360deg);
}
I have seen in various places that both these rules work for IE9 though mostly I am reading that you need the -ms prefix
http://www.wanderfest.com is the link if you want to check it
the site is not in quirks mode as suggested here