// Position:absolute elements will not move when window is resized 
// if a sibling contains float elements and a clear:both element
// https://bugzilla.mozilla.org/show_bug.cgi?id=442542
// FireFox 3.0+
if (navigator.userAgent.toLowerCase().search(/firefox\/(3\.\d+)/i) != -1 && typeof(window.$) != 'undefined') {
$.event.add( window, 'resize', function() {
  var h = document.getElementById('header');
  if (!h || $(h).css('position') != 'absolute')
    return;

  document.getElementById('header').style.position = 'static';
  setTimeout(
    function() {
      document.getElementById('header').style.position = 'absolute';
    },
  20);
});
}