Focus and blur flash on mouseover / out

I am trying to focus and blur a flash file because I am using the scrollwheel in there… But the blur does not work… even when I try to set focus to a different element or trigger a click. Does anybody know a good solution for this?

$(document).ready(function() {
      function () {
        this.onmousewheel = function(){            
            return false
      function () {
        this.onmousewheel = function() {            
            return true;