I've Noticed that This Hack Slows Down the Movement of the Smilies after Browsing some Pages, when the Mouse Cursor is Moving and Movement of the Smilies is Normal only when Mouse Cursor isn'r Moving!!
Perhaps something in the Memory isn't Clearing Right and Accumulates and Saturates something in Memory or in the Internet Explorer Browser!!
I'm 100% Sure of this because I've Tested that Behavior by Disabling the Fisheye Menu Hack and Speed of the Smilies Restores to Normal!!
As I Told this Happens a few minutes and after Browing into some Pages on the Forum!!
The Hack Works Great, this is a Little Bug I've Noticed since some time Ago!!
My Best Regards!!